CBSE - Aptitude Mathematics

Rs.770 have been divided among A, B and C such that A receives 2/9th of what B and C together receive. Then A's share is 1. Rs.140 2. Rs.154 3. Rs.165 4. Rs.170

A car currently travels 15 miles on a gallon of gas but after a tune-up the car will use only 3/4 as much gas as it does now. How many miles will the car travel on a gallon of gas after the tune-up? 1. 15 2. 16 1/2 3. 17 1/2 4. 20

Gangoly purchased 13 tins at Rs.50 each, 25 tins at Rs.52 each and 2 tins at Rs.100 each. Average price per tin is 1. Rs.52.95 2. Rs.51.85 3. Rs.53.75 4. Rs.58

Standard deviation is greater than 1. arithmetic mean 2. geometric mean 3. harmonic mean 4. depends on the data

A man borrowed Rs. 500 at simple interest at 3% per annum and Rs. 600 .at '4Y2% per annum on a condition that the total sum will be paid back when total interest amounts to Rs. 126. Find the number of years after which the sum has to be paid back? (1) 2 (2) 3 (3) 4 (4) 5