Quantitative Aptitude Practice Question and Answer
8Q: The average age of a class is 19 years. While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class? 3966 05b5cc6bce4d2b4197774d8a2
5b5cc6bce4d2b4197774d8a2- 112false
- 210false
- 38true
- 46false
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Answer : 3. "8"
Explanation :
Answer: C) 8 Explanation: Let the number of boys = x From the given data, => [21x + 16(18)]/(x+16) = 19 => 21x - 19x = 19(16) - 16(18) => 2x = 16 => x = 8 Therefore, the number of boys in the class = 8.
Q: Two men A and B start from place X walking at 4 ½ kmph and 5 ¾ kmph respectively. How many km apart they are at the end of 3 ½ hours if they are walking in the same direction ? 3960 05b5cc6eee4d2b4197774ef11
5b5cc6eee4d2b4197774ef11- 12 9/7 kmfalse
- 23 7/5 kmfalse
- 31 3/4 kmfalse
- 44 3/8 kmtrue
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Answer : 4. "4 3/8 km"
Explanation :
Answer: D) 4 3/8 km Explanation: Relative Speed = 5 ¾ - 4 ½ = 1 ¼ Time = 3 ½ h. Distance = 5/4 x 7/2 = 35/8 = 4 3/8 km.
Q: A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ? 3952 05b5cc6e7e4d2b4197774edd4
5b5cc6e7e4d2b4197774edd4- 110 : 27 : 41 AMfalse
- 28 : 51 : 04 AMfalse
- 39 : 45 : 15 PMfalse
- 410 : 23 : 20 PMtrue
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Answer : 4. "10 : 23 : 20 PM"
Explanation :
Answer: D) 10 : 23 : 20 PM Explanation: The watch gains 5 seconds in 3 minutes = 100 seconds in 1 hour. From 8 AM to 10 PM on the same day, time passed is 14 hours. In 14 hours, the watch would have gained 1400 seconds or 23 minutes 20 seconds. So, when the correct time is 10 PM, the watch would show 10 : 23 : 20 PM
Q: सिमरन ने 50,000 रूपये का निवेश कर एक सॉफ्टवेयर का व्यवसाय शुरू किया। 6 महीने बाद नंदा ने 80,000 रूपये की पूंजी लगाकर साझेदार हो गयी। यदि 3 साल बाद उन्होंने 24,500 रूपये का लाभ कमाया तो सिमरन का लाभ में हिस्सा क्या होगा? 3942 05b5cc731e4d2b4197774f7f1
5b5cc731e4d2b4197774f7f1- 112,421false
- 29,423false
- 311,600false
- 410,500true
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Answer : 4. "10,500"
Explanation :
Answer: D) 10,500 Explanation: The ratio of their investments:50000x36 : 80000x30 = 3 : 4Simran's share of profit = (24500x3/7) = Rs.10,500.
Q: निम्नलिखित प्रश्न में प्रश्न चिह्न (?) के स्थान पर क्या अनुमानित मान आना चाहिए?
635×455÷403=?
3941 05d4aaf0011160f205237394e
5d4aaf0011160f205237394e635×455÷403=?
- 1735false
- 2795false
- 3695false
- 4685false
- 5715true
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Answer : 5. "715"
Q: Time taken by P alone to finish a work is 50% more than the time taken by P and Q together. Q is thrice as efficient as R. If Q and R together can complete the work in 22.5 days, then how many days will P alone take to complete the work ? 3938 05b5cc6c5e4d2b4197774dd05
5b5cc6c5e4d2b4197774dd05- 117 daysfalse
- 211 daysfalse
- 315 daystrue
- 416 daysfalse
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Answer : 3. "15 days"
Explanation :
Answer: C) 15 days Explanation: We know that Time is inversely proportional to Efficiency Here given time ratio of P & P+Q as P/P+Q = 150/100 = 3:2 Efficiency ratio of P & Q as P:Q = 2:1 ....(1) Given Efficiency ratio of Q & R as Q:R = 3:1 ....(2) From (1) & (2), we get P:Q:R = 6:3:1 P alone can finish the work in 22.5(3+1)/6 = 15 days.
Q: Find the number of factors of 9321 ? 3919 05b5cc736e4d2b4197774f832
5b5cc736e4d2b4197774f832- 14false
- 25false
- 37false
- 48true
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Answer : 4. "8"
Explanation :
Answer: D) 8 Explanation: 9321 = 3 x 13 x 239 = 31 x 13 1 x 239 1 ; add one to all the powers ie., (1+1) x (1+1) x (1+1)= 8 ; we get eight factors.
Q: If HCF of two numbers is 8,which of the following can never be their LCM? 3917 05b5cc75ce4d2b4197774fc5c
5b5cc75ce4d2b4197774fc5c- 132false
- 248false
- 360true
- 4152false
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Answer : 3. "60"
Explanation :
Answer: C) 60 Explanation: 60 is not a multiple of 8