What number divided by 2 and then by 5 equals 15?

Answer 1

Work backwards to find the answer.

15*5=75 ---> 75*2=150

150/2=75 ---> 75/5=15

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This can be made into a pure math question.

X is the number you think of.

X/2/5=15

We do not want the division, so we want to take those away by multiplying with exactly the same. What we do on one side of the equal, we must also do on the other side of equal. This goes:

X/2/5*2*5=15*2*5

Now we just do the math and get the answer.

X=150