Question

Which ratio is not equivalent to 15/18?
A: 25/30
B: 90/105
C: 60/72
D: 35/42

Answer 1

B

Explanation:

Both of the two numbers should equal the same amount when dividing.

For example, in A

25÷15=1.666...

30÷18=1.666...

Both of these answers are the same so that means that 25/30 is equivalent to 15/18

When you're dividing B though, they don't equal the same amount

90÷15=6

105÷18= 5.833...

that means that 90/105 does NOT equal 15/18

good luck

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