Q1) Tom and Gary ran in a race. When Gary had complete the run in 20 minutes, Tom had only run 5/8 of the distance. Tom's average speed for the race was 75m/min less than Gary's.
a) Find the distance of the race.
b) What was Tom's speed in m/min?
Q20 In Mariam's aquarium,there are swordtails and guppies. 25% of the fishes are swordtails. She then buys and equal number of swordtails and puts them into the aquarium.
a) Will the percentage of fishes in the aquarium which are guppies increase,decrease or remain the same?
b) What percentage of the fishes will be guppies?