exam
Maths Puzzle
Numerical Ability
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?
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exam Other Question
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.
The probability of being choosen for a dance committee is 3/40. There are 360 students in your class. How many people will be on the dance committee?
A. 9
B. 27
C. 40
D. 120