quantitative aptitude

A boat covers 154 km upstream in 7 hours and the boat covers 217 km in still water in 7 hours. Find the difference between the time taken by the boat to cover 240 km downstream and 110 km upstream? A.            2 hours B.            5 hours C.            3 hours D.            1 hour E.            None of […]

18 men can do a work in n days. If 15 men started the work and after 10 days, (n – 5) more men joined the work and the remaining work was completed in 7 days, then find the value of n? A.            10 B.            35 C.            15 D.            20 E.            None of these Sol:

Directions: What value should come in the place of (?) in the following questions. Q. ? % of (75 × 4 – 150) = 420 + 752 A. 4280 B. 4520 C. 4030 D. 5060 E. None of these Sol: x % of (75 × 4 – 150) = 420 + 752 (x/100)*(300 – 150)

The age of A 3 years hence is three times the age of B 5 years ago and A is 9 years younger than C. If the sum of the present age of A, B and C together is 78 years, then find the present age of C? A.            39 years B.            51 years C.           

Direction: What value should come in the place of (?) in the following questions. Q) 55% of 4800 – (1/5) of 900 + 45% of 1600 =? – 450 A. 5140 B. 2860 C. 4250 D. 3630 E. None of these Sol: 55% of 4800 – 1/5 of 900 + 45% of 1600 = ?

Direction: What value should come in the place of (?) in the following questions. Q. 60 x 40 – 956 + 46 x 3 =? A. 1144 B. 1582 C. 1434 D. 1628 E. 1322 Sol: => 60 x 40 – 956 + 46 x 3 =? => 2400 – 956 + 138 =? =>

After 6 years, the ratio of the ages of Arul to Karan is 7:6. The average age of Arul, Karan and Saran is 30 years. If the age of Saran is 12 years younger than Arul, then find the present age of Karan? A.            24 years B.            30 years C.            36 years D.            42 years

A shopkeeper buys some bottles for Rs.900, some lunch boxes for Rs.450 and some calculators for Rs.480. If he sells the bottles at10% loss, Lunch boxes at 40% profit and calculators at 10% loss, find his overall gain or loss? A.            Rs.36 loss B.            Rs.42 profit C.            Rs.30 profit D.            Rs.45 Loss E.            No loss

Direction: Find out the missing number in the following number series. 2, 14, 34, 64, 106, ? A. 162 B. 168 C. 172 D. 178 E. 156 Sol: 2 + (3 * 4) = 14 14 + (4 * 5) = 34 34 + (5 * 6) = 64 64 + (6 * 7) =

Direction: Find out the missing number in the following number series. 12, 12, 24, 36, 60, ? A. 78 B. 100 C. 96 D. 120 E. 108 Sol: 12 + 12 = 24 12 + 24 = 36 24 + 36 = 60 36 + 60 = 96