Answers

2014-11-05T18:42:35+08:00
Since the ratio of lions to monkeys is given as 2:5 and you are given that there are 45 monkeys, then you'll have the number of lions as:
let 'x' be the number of lions for 45 monkeys
 \frac{2}{5} =  \frac{x}{45}
5x = 45(2)
5x = 90
x = 18
therefore there are 18 lions
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2014-11-07T08:13:32+08:00
Divide the 45 to 5 then the result will be multiply to 2

45/5 = 9

9 * 2 = 18 :)
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