Usha is 10% heavier than Harry. Kathy is 50% lighter than Harry. Usha is 60 kg heavier than Kathy. What is Harry's mass?
| Usha |
Harry |
Kathy |
| 110% |
100% |
|
| |
100% |
50% |
| 11 u |
10 u |
5 u |
Usha's mass compared to Harry's mass in percent
= 100% + 10%
= 110%
Kathy's mass compared to Harry's mass in percent
= 100% - 50%
= 50%
110% =
110100 =
111050% =
50100 =
510Harry's mass is the repeated identity. Make Harry's mass the same.
Harry's mass = 10 u
Mass that Usha has more than Kathy
= 11 u - 5 u
= 6 u
6 u = 60
1 u = 60 ÷ 6 = 10
Harry's mass
= 10 u
= 10 x 10
= 100 kg
Answer(s): 100 kg
