Gabby's uncle's weight to her weight is 3 : 2. If Gabby puts on 20% 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.
|
Gabby's uncle |
Gabby |
Total |
Before |
3 u |
2 u |
5 u |
Change |
- 0.4 u |
+ 0.4 u |
|
After |
2.6 u |
2.4 u |
5 u |
Amount of weight that Gabby puts on
= 20% x 2 u
=
20100 x 2 u
= 0.4 u
The total weight remains unchanged.
Percentage of weight that Gabby's uncle must be reduced by
=
0.43 x 100%
≈ 13.3% (Correct to 1 decimal place.)
Answer(s): 13.3%