Question

How did the temperature change if: at first it decreased by 10 % and then decreased by 30% ?

Answer 1

37% and it decreased

Explanation:

Answer 2

We decreased by 37%

Explanation:

Let x be the starting temperature

We decrease by 10 percent which means we are left with 100-10 =90 percent

.90 x

Then we decrease by 30 percent, 100 - 30 = 70

( .90x) * .70

.63x

We have .63 of the original left or 63%

100 -63 = 37

We decreased by 37%