book Maths Puzzle Numerical Ability

Can someone help me solve this problem?

Is the rate 1.2 inches of rain/5 hours equivalent to the rate 2.1 inches of rain/8 hours?

Thanks,
Sher

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book Other Question
The point (1,2) has the distance from the line defined by

{{{y=-(x/3+1) how do I determine the x and y intercepts of the graph of x=3y^2-9 ??

Thanks