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There are a total of 80 heads and 200 legs on a farm. The farm only has pigs and chickens. (a) How many pigs are there? (b) How many chickens are there? Notes to student: If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for pa ...
The average time taken by a bike and a car to travel 500 m is 14.5 seconds. The average time taken by a bike, a car and a bus to travel 500 m is 17.5 seconds. Find the time taken by the bus to travel 500 m. Notes to students: 1. Round your answer off to 2 decimal places
The average mass of a turkey, a duck and a chicken is 5.4 kg. The mass of the duck is 3.3 kg more than the average mass, while the mass of the chicken is 0.6 kg less than the average mass. Find the mass of the turkey. Notes to students: Round your answer off to 2 decimal places
There were a total of 3300 mango and apple trees in an orchard. `11/16` of the number of mango trees was equal to `1/4` of the number of apple trees. The fruits from 275 mango trees and 605 apple trees were plucked and taken to the market. (a) How many mango trees still had mangoes to be plucked? (b) How many apple trees still had apples to be plucked? ...
An hour ago, Mike poured 96 litres of water into tank A and 29.2 litres of water into tank B. Then, Kenny poured an equal amount of water into each tank. Now, the amount of water in tank B is `3/5` that of tank A. (a) How much water did Kenny pour into each tank? (b) What is the total amount of water in both tanks now? ...
A big garden had 540 birds. Ducks comprised 30% of the birds. The remaining birds were geese. One day, some geese were taken away from the garden. As a result, the percentage of geese in the garden decreased to 60%. Find the number of geese that were taken away from the garden.