exam Maths Puzzle Numerical Ability

Computer City sells batteries ($3) and small boxes of pens ($5). In August, total sales were $960. customers bought 5 times as many batteries as boxes of pens. How many of each

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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 how do i solve a multiuple radical equaion