PSLE Valen was given a fixed amount of allowance each month. In July, he saved $70 and spent the rest. In August, he saved 40% more and his spending decreased by 10%. How much was Valen's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 10 u |
After |
140% |
90 u |
100% of savings = 70
1% of savings = 70 ÷ 100 = 0.7
40% of savings = 40% x 70 = 28
40% of savings = 10 u of spending
10 u of spending = 28
1 u of spending = 28 ÷ 10 = 2.8
100 u of spending = 100 x 2.8 = 280
Valen's allowance for each month
= 100% of savings + 100 u of spending
= 70 + 280
= $350
Answer(s): $350