RRB NTPC Maths Questions Asked on 28th March 2016

80.       Ram is 4 times his son's age today. Five years hence, Ram will be thrice his son's age. Find their current ages?

            A. 60, 15

            B. 40, 10

            C. 20, 5

            D. 32, 8   

81.       Meena took a car loan for Rs. 275,000 from the bank. She paid an interest @ 8% p.a. and settled the account after 3 years. At the time of settlement she gave her old scooter to the bank plus Rs. 335,000. What price did the scooter fetch?

            A. 60,000

            B. 6,000

            C. 66,000

            D. 6,600

 

82.       The distance between two places, And B is 300 km. Two riders, on scooters start simultaneously from A and B towards each other. The distance between them after 2.5 hrs is 25 km. If the speed of one scooter is 10 km/hr more than the other, find the speed of each scooter in km/hr.

            A. 50 and 60

            B. 30 and 40

            C. 40 and 50

            D. 60 and 70

90.       If  then (Sin A + Cos A) × Cosec A is?

            A. 12/15

            B. 17/5

            C. 11/5

            D. 2

92.       If (a² – b²) ÷ (a + b) = 25, find a – b.

            A. 15

            B. 18

            C. 25

            D. 30

97.       A man sells a table for Rs. 4200 at 25% loss. At what price must he sell to get a profit of 25%?

            A. 1,400

            B. 8,400

            C. 7,000

            D. 5,600

99.       A tank can be filled by two taps X and Y in 5 hrs and 10 hrs respectively while another tap Z empties the tank in 20 hrs. In how many hours can the tank be filled if all 3 taps are kept open?

            A. 5

            B. 4

            C. 7

            D. 8

 

100.     Anil bought 100 eggs at Rs. 6 per egg. He sold 25 eggs at 10% profit, another 25 eggs at 25% loss and the balance 50 eggs at 20% profit. Find the overall profit or loss percent Anil made?

            A. 6.25% loss

B. 6.25% profit

            C. 8% profit

            D. 12% loss