a) find the values of m & n. 1/m + 4/n = 1/12
b) A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cms and its width is increased also by x cms so as to make it a square then its area changes by ?
c) A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is?
d) If 1 cm on a map corresponds to an actual distance of 40 kms. And the distance on the map between Bombay and Calcutta is 37.5 cms., the actual distance between them ?
e) If the radius of a circle is increased by 20% then the area is increased by :
f) Tom, Dick and Harry went for lunch to a restaurant. Tom had $100 with him, Dick had $60 and Harry had $409. They got a bill for $104 and decided to give a tip of $16. They further decided to share the total expenses in the ratio of the amounts of money each carried. The amount of money which Tom paid more than what Harry paid is ?
g) If 3/p = 6 and 3/q = 15 then p - q = ?
h) A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is ?
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