Question

Three-fourths of a number x gives 15​

Answer 1

Answer:

3/4*n=15

4/5*n=x

First, I don’t have to work that out, it’s obvious to me at a glance.

But you want it worked out, so here we go:

Take that first equation, and multiply by 4/3 to isolate the n

n=4/3*15

That comes to 20

Answer 2

Answer:

3/4 of x = 15

3/4 x X = 15

X = 15 x 4/3 (cancel 15 and 3 with three table)

X = 5 x 4/1

X = 20

therefore, the number is 20~

Hope it helps~

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