A and B borrowed ` 3000 and ` 3200
respectively at the same rate of interest
for 2$1\over2$ years. If B paid ` 40 more interest
than A, find the rate of interest :

5E9 + 2F8 + 3G7 = 1114
500 + 10 × E + 9 + 200 + 10 × F + 8 + 300 +
10 × G + 7 = 1114
10E + 10F + 10G = 1114 – (9 + 8 + 7)
– (500 + 200 + 300)
10E + 10F + 10G = 90
E + F + G = 9
So, the maximum value of F can be 9.

In a 500 m race, the ratio of speeds of two
runners P and Q is 3 : 5. P has a start of
200 m then the distance between P and Q
at the finish of the race is :

Speed of P : Speed of Q = 3 : 5
In a race of 500 m, when Q will complete
the race, P will cover 300 m. If P have a
start of 200 m. So, P and Q will finish the
race at the same time.

If 12 carpenters working 6 hours a day can
make 460 chairs in 240 days, the number
of chairs made by 18 carpenters in 360 days
each working 8 hours a day will be