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प्र: In what ratio should two varieties of tea at Rs. 60 per kg and Rs.120 per kg be mixed together so that by selling the mixture at Rs.96 per kg, a profit of Rs.20% is obtained ? 1444 0

उत्तर :
व्याख्या :
Let us first calculate the cost of price of the mixture. the selling price of the mixture is given as Rs.96 and the profit is given as 20%. So, Cost price = 100120×96 = Rs. 80 Now, let us apply allegation method : = 40 : 20 = 2 : 1

प्र: A man travelled a distance of 80 km in 7 hours partly on foot at the rate of 8 km per hour and partly on bicycle at 16 km /hr. Find the distance travelled on foot ? 830 0

उत्तर :
व्याख्या :
Let the Journey on foot be x km Journey on cycle = (80 – x) km ∴x8+80-x16= 7 => x = 32km Therefore, Distance covered on foot in 4 hrs = ( 4 x 8) = 32 km

प्र: A sum of Rs.118 was divided among 50 boys and girls such that each boy received Rs.2.60 and each girl Rs.1.80. Find the number of boys and girls ? 7332 0

उत्तर :
व्याख्या :
Average money received by each = 118/50 = Rs. 2.36 Therefore, Ratio of No.of boys and girls = 56 : 24 = 7 : 3 Therefore, Number of boys = 50 x (7/10) = 35 Number of girls = 50 - 35 = 15

प्र: In what proportion water must be added to spirit to gain 20% by selling it at the cost price ? 2733 0

उत्तर :
व्याख्या :
Let the C.P of spirit be = Rs.10 per litre Then S.P l litre of the mixture = Rs. 11 Profit = 20% Therefore, C.P of the mixture = Rs. 100120×10 = Rs. 25/3 per litre Therefore, Ratio of water and spirit = 1 : 5

प्र: How many kilometers and represented by 1oof latitude? 1292 0

उत्तर : 3. "111 km"
व्याख्या :
Answer: C) 111 km Explanation:

प्र: The earth is at its maximum distance from the Sun on : 2219 0

उत्तर : 4. "July 4th"
व्याख्या :
Answer: D) July 4th Explanation:

प्र: The planet that takes 88 days to make one revolution of the sun is __________ 1518 0

उत्तर : 1. "Mercury"
व्याख्या :
Answer: A) Mercury Explanation:

प्र: Light - year measures which of the following ? 1465 0

प्र: In what ratio should two varieties of tea at Rs. 60 per kg and Rs.120 per kg be mixed together so that by selling the mixture at Rs.96 per kg, a profit of Rs.20% is obtained ? 1444 05b5cc7abe4d2b4197775074a

उत्तर : व्याख्या :Let us first calculate the cost of price of the mixture. the selling price of the mixture is given as Rs.96 and the profit is given as 20%. So, Cost price = 100120×96 = Rs. 80 Now, let us apply allegation method : = 40 : 20 = 2 : 1

प्र: A man travelled a distance of 80 km in 7 hours partly on foot at the rate of 8 km per hour and partly on bicycle at 16 km /hr. Find the distance travelled on foot ? 830 05b5cc7abe4d2b41977750749

उत्तर : व्याख्या :Let the Journey on foot be x km Journey on cycle = (80 – x) km ∴x8+80-x16= 7 => x = 32km Therefore, Distance covered on foot in 4 hrs = ( 4 x 8) = 32 km

प्र: A sum of Rs.118 was divided among 50 boys and girls such that each boy received Rs.2.60 and each girl Rs.1.80. Find the number of boys and girls ? 7332 05b5cc7abe4d2b41977750748

उत्तर : व्याख्या :Average money received by each = 118/50 = Rs. 2.36 Therefore, Ratio of No.of boys and girls = 56 : 24 = 7 : 3 Therefore, Number of boys = 50 x (7/10) = 35 Number of girls = 50 - 35 = 15

प्र: In what proportion water must be added to spirit to gain 20% by selling it at the cost price ? 2733 05b5cc7abe4d2b41977750747

उत्तर : व्याख्या :Let the C.P of spirit be = Rs.10 per litre Then S.P l litre of the mixture = Rs. 11 Profit = 20% Therefore, C.P of the mixture = Rs. 100120×10 = Rs. 25/3 per litre Therefore, Ratio of water and spirit = 1 : 5

प्र: How many kilometers and represented by 1oof latitude? 1292 05b5cc7abe4d2b41977750742

उत्तर : 3. "111 km" व्याख्या :Answer: C) 111 km Explanation:

प्र: The earth is at its maximum distance from the Sun on : 2219 05b5cc7abe4d2b4197775073d

उत्तर : 4. "July 4th" व्याख्या :Answer: D) July 4th Explanation:

प्र: The planet that takes 88 days to make one revolution of the sun is __________ 1518 05b5cc7abe4d2b41977750738

उत्तर : 1. "Mercury" व्याख्या :Answer: A) Mercury Explanation:

प्र: Light - year measures which of the following ? 1465 05b5cc7abe4d2b41977750733

उत्तर : 3. "Distance" व्याख्या :Answer: C) Distance Explanation:

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प्र: In what ratio should two varieties of tea at Rs. 60 per kg and Rs.120 per kg be mixed together so that by selling the mixture at Rs.96 per kg, a profit of Rs.20% is obtained ? 1444 0

उत्तर :
व्याख्या :
Let us first calculate the cost of price of the mixture. the selling price of the mixture is given as Rs.96 and the profit is given as 20%. So, Cost price = 100120×96 = Rs. 80 Now, let us apply allegation method : = 40 : 20 = 2 : 1

प्र: A man travelled a distance of 80 km in 7 hours partly on foot at the rate of 8 km per hour and partly on bicycle at 16 km /hr. Find the distance travelled on foot ? 830 0

उत्तर :
व्याख्या :
Let the Journey on foot be x km Journey on cycle = (80 – x) km ∴x8+80-x16= 7 => x = 32km Therefore, Distance covered on foot in 4 hrs = ( 4 x 8) = 32 km

प्र: A sum of Rs.118 was divided among 50 boys and girls such that each boy received Rs.2.60 and each girl Rs.1.80. Find the number of boys and girls ? 7332 0

उत्तर :
व्याख्या :
Average money received by each = 118/50 = Rs. 2.36 Therefore, Ratio of No.of boys and girls = 56 : 24 = 7 : 3 Therefore, Number of boys = 50 x (7/10) = 35 Number of girls = 50 - 35 = 15

प्र: In what proportion water must be added to spirit to gain 20% by selling it at the cost price ? 2733 0

उत्तर :
व्याख्या :
Let the C.P of spirit be = Rs.10 per litre Then S.P l litre of the mixture = Rs. 11 Profit = 20% Therefore, C.P of the mixture = Rs. 100120×10 = Rs. 25/3 per litre Therefore, Ratio of water and spirit = 1 : 5

प्र: How many kilometers and represented by 1oof latitude? 1292 0

उत्तर : 3. "111 km"
व्याख्या :
Answer: C) 111 km Explanation:

प्र: The earth is at its maximum distance from the Sun on : 2219 0

उत्तर : 4. "July 4th"
व्याख्या :
Answer: D) July 4th Explanation:

प्र: The planet that takes 88 days to make one revolution of the sun is __________ 1518 0

उत्तर : 1. "Mercury"
व्याख्या :
Answer: A) Mercury Explanation:

प्र: Light - year measures which of the following ? 1465 0

उत्तर : 3. "Distance"
व्याख्या :
Answer: C) Distance Explanation: