Education

To complete a wall, X takes 50 % more time than Y. If together they complete the wall in 15 days, then how much time will X alone takes to complete it

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options A) 42.5 Days B) 40 Days C) 36.5 Days D) 37.5 Days Detailed solution Lets take it as 100, then X = 150 Y = 100 X/Y = 150/100 = 3/2 Efficiency of work are in above ratio. ( Efficiency is always inversely proportion to time) Total work = 15 days ( 2+3) unit … Read more

A man walk at a speed of 8 km/h. After every kilometer, he takes a rest of 4 minutes. How much time will he take to cover a distance of 6km?

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A) 70 min B) 60 min C) 69 min D) 65 min Detailed solution : {The above question had appeared in the CGL Mains 2020 } Time = 6/8 = 3/4 hours i.e. 45 min Including rest = 45+5×4 = 65 min ANSWER : 65 min OTHER GOVT JOBS NOTIFICATION: CLICK HERE DAILY MCQ FOR GOVT JOBS PREPARATION: CLICK … Read more

A train travelling at 36km/h crosses a pole in 25 second. How much time (in second) will it take to cross a bridge 350m long?

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A) 72 B) 48 C) 60 D) 56 Detailed solution : {The above question had appeared in the CGL Mains 2020 } Let the length of train = x 36×5/18 = x/25 x= 250 36×5/18 = 350+250/time (t) time(t) = 60 second ANSWER : c) 60 OTHER GOVT JOBS NOTIFICATION: CLICK HERE DAILY MCQ FOR GOVT JOBS PREPARATION: CLICK … Read more

Two positive numbers difference by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater number is

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A) 1558 B) 1458 C) 1585 D) 1485 Detailed solution : {The above question had appeared in the CGL Mains 2020 } Let the greatest number = x Let the smallest number = y x = 7y + 50 x – 7y = 50 x-y = 1280 By solving the above equations, we get -6y … Read more

The incomes of two persons P and Q are in the ratio 5 ∶ 6. If each of them saves Rs.200 per month, the ratio of their expenditures is 3 ∶ 4. Find the income of Q.

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A) 750 B) 800 C) 600 D) 740 Detailed solution Let two persons be P and Q 5. :. 6. Income of two person 3. :. 4 expenditure For Q If income is 6 and expenditure is 4 remaining will be his saving which is 2 But in question they are given it as 200 … Read more