Question

ASAP ASAP

A student increased in height from 1.52m to 1.68m in one year. Calculate this
percentage increase in height.

Answer 1

10.5% (Rounds to 11% if question asked)

Explanation:

When finding percentage increase, I usually construct a proportion, as follows

1.52. 100%

------. =. ---------

1.68. x

1.52 across from 100 because that was his actual height %

1.68 across from x because we want that new %

We start by cross multipling

1.52x = (1.68)(100)

1.52x = 168

Next we divide by 1.52 on both sides of the equal sign to get x alone

x = 110.5%

Now he's at 110.5%

We simply subtract the percent

110.5-100 = 10.5

10.5% (Rounds to 11% if question asked)