exam Maths Puzzle Numerical Ability

A sample of 50 students was asked what type of pizza to order for a class party. 20 wanted sausage pizza. Based on the survey, predict how many students in a class of 450 would want sausage piiza.

Read Solution (Total 0)

exam Other Question

Please help me solve this prroblem:
A passenger train travels 392mi in the same time that it takes a freight train to travel 322mi. if the passenger train travels 20mi/h faster than the freight train, find the speed of each train pipe a takes 8 hours to empty out a pool. when added with pipe b it takes only 3 hourse. how long would pipe b take to empty out the pool?