Zoe's salary is 30% less than Risa's salary and 40% less than Tammy's salary. If Risa's salary is $250 less than that of Tammy's salary,
- Find Risa's salary.
- Given that Risa received a 35% salary increment, find her new salary.
(a)
100% - 30% = 70%
70% =
70100 =
710 100% - 40% = 60%
60% =
60100 =
35
| Zoe |
Risa |
Tammy |
| 7x3 |
10x3 |
|
| 3x7 |
|
5x7 |
| 21 u |
30 u |
35 u |
Zoe's salary is the repeated identity. Make Zoe's salary the same. LCM of 7 and 3 is 21.
Amount that Risa's salary is less than Tammy's salary
= 35 u - 30 u
= 5 u
5 u = 250
1 u = 250 ÷ 5 = 50
Risa's salary
= 30 u
= 30 x 50
= $1500
(b)
Percentage of Risa's salary after 35% salary increment
= 100% + 35%
= 135%
Risa's new salary
= 135% x 1500
=
135100 x 1500
= $2025
Answer(s): (a) $1500; (b) $2025
