Question

PLEASE HELP ME A.S.A.P.

Answer 1

Explanation:

So if a decreased by 50%, then that means that half of a is subtracted from a

a - a/2

Now we have a/2 left. If a/2 increases by 50%, then we're increasing a/2 by half of its value:

1/2(a/2) = a/4

a/2 + a/4 = 3a/4

We now have 75% of a.

a is 25% greater than the second number we got. Hope this helps!