## Solution
Distance covered by the car = 100 5 = 500 km
\ Speed = 5002 = 250 km/hr
\ Speed gain = 250 100 = 150 km/hr
## What the question and answer could be
A car finishes a journey in five hours at the speed of 100 km/hr. If the same distance is to be covered in two hours how much more speed does the car have to gain?
Options:
(A) 8 km/hr
(B) 10 km/hr
(C) 150 km/hr
(D) 16 km/hr
(E) None of these
(C)

## Solution
(80/100) * 60 (4/5) * 25
48 - 20 = 28
## What the question and answer could be
How much is 80% of 60 is greater than 4/5 of 25?
Options:
(A) 15
(B) 28
(C) 16
(D) 12
(E) 73
(B)

## Solution
Work done by X in 1 day = 1/18
Work done by Y in 1 day = 1/15
Work done by Y in 10 days = 10/15 = 2/3
Remaining work = 1 2/3 = 1/3
Number of days in which X can finish the remaining work = (1/3) / (1/18) = 6
## What the question and answer could be
X can finish a work in 18 days. Y can finish the same work in 15 days. Yworked for 10 days and left the job. how many days does X alone need to finish the remaining work?
Options:
(A) 5
(B) 4
(C) 6
(D) 7
(E) 8
(C)

## Solution
I = (450*8*5)/100 = 180
## What the question and answer could be
Find the simple interest on Rs.450 for 8 months at 5 paisa per month?
Options:
(A) 277
(B) 270
(C) 180
(D) 266
(E) 121
(C)