PSLE Linda spent $945 in May. This amount was a 35% increase from what she spent in April. The amount she spent in June was a 20% decrease from what she spent in May.
- What was the total amount that Linda spent from April to June?
- What was the percentage increase in the amount Linda spent in June compared to April?
|
Spending |
April |
100% |
|
Change |
+ 35% |
|
May |
135% |
100 u |
Change |
|
- 20 u |
June |
|
80 u |
(a)
Spending in April = 100%
Spending in May = 100% + 35% = 135%
135% = 945
1% = 945 ÷ 135 = 7
Spending in April
= 100%
= 100 x 7
= $700
Spending in May = 100 u
Spending in June = 100 u - 20 u = 80 u
100 u = 945
1 u = 945 ÷ 100 = 9.45
Spending in June
= 80 u
= 80 x 9.45
= $756
Total spending from April to June
= 700 + 945 + 756
= $2401
(b)
Increase in spending in June compared to April
= 756 - 700
= $56
Percentage increase
=
Increase in spendingSpending in April x 100%
=
56700 x 100%
= 8%
Answer(s): (a) $2401; (b) 8%