Winnie's uncle's weight to her weight is 3 : 2. If Winnie puts on 25% more weight, by what percentage must her uncle's weight be reduced by so that their total weight remains unchanged as before? Correct the answer to 1 decimal place.
| |
Winnie's uncle |
Winnie |
Total |
| Before |
3 u |
2 u |
5 u |
| Change |
- 0.5 u |
+ 0.5 u |
|
| After |
2.5 u |
2.5 u |
5 u |
Amount of weight that Winnie puts on
= 25% x 2 u
=
25100 x 2 u
= 0.5 u
The total weight remains unchanged.
Percentage of weight that Winnie's uncle must be reduced by
=
0.53 x 100%
≈ 16.7% (Correct to 1 decimal place.)
Answer(s): 16.7%
