PSLE Linda spent $540 in May. This amount was a 35% increase from what she spent in April. The amount she spent in June was a 40% decrease from what she spent in May.
- What was the total amount that Linda spent from April to June?
- What was the percentage decrease in the amount Linda spent in June compared to April?
|
Spending |
April |
100% |
|
Change |
+ 35% |
|
May |
135% |
100 u |
Change |
|
- 40 u |
June |
|
60 u |
(a)
Spending in April = 100%
Spending in May = 100% + 35% = 135%
135% = 540
1% = 540 ÷ 135 = 4
Spending in April
= 100%
= 100 x 4
= $400
Spending in May = 100 u
Spending in June = 100 u - 40 u = 60 u
100 u = 540
1 u = 540 ÷ 100 = 5.4
Spending in June
= 60 u
= 60 x 5.4
= $324
Total spending from April to June
= 400 + 540 + 324
= $1264
(b)
Decrease in spending in June compared to April
= 400 - 324
= $76
Percentage decrease
=
Decrease in spendingSpending in April x 100%
=
76400 x 100%
= 19%
Answer(s): (a) $1264; (b) 19%