Mary is 50% heavier than Carl. Yoko is 30% lighter than Carl. Mary is 80 kg heavier than Yoko. What is Carl's mass?
| Mary |
Carl |
Yoko |
| 150% |
100% |
|
| |
100% |
70% |
| 15 u |
10 u |
7 u |
Mary's mass compared to Carl's mass in percent
= 100% + 50%
= 150%
Yoko's mass compared to Carl's mass in percent
= 100% - 30%
= 70%
150% =
150100 =
151070% =
70100 =
710Carl's mass is the repeated identity. Make Carl's mass the same.
Carl's mass = 10 u
Mass that Mary has more than Yoko
= 15 u - 7 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Carl's mass
= 10 u
= 10 x 10
= 100 kg
Answer(s): 100 kg
