## Sample questionEdit

80% of the fish in a tank were guppies and the rest were mollies. After 27 guppies and 12 mollies left the tank, 75% of the fish in the tank were guppies. Find the total number of fish in the tank at first.

Last modified on 31 May 2011, at 07:23
# PSLE Study Guide/Mathematics

## Sample questionEdit

80% of the fish in a tank were guppies and the rest were mollies. After 27 guppies and 12 mollies left the tank, 75% of the fish in the tank were guppies. Find the total number of fish in the tank at first.