exam Maths Puzzle Numerical Ability

if y=3x+18, find y
3x
when x=3

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exam Other Question

From a point on a river, two boats are driven in opposite directions, one at 10 miles per hour and the other at 6 miles per hour. In how many hours will they be 32 miles apart?

If anyone could help that would be great!
thanks one integer is 2 more than 5 times another integer. if the difference of the two integer is 26, what is the small integer? Smaller integer=