PSLE Linda spent $1350 in May. This amount was a 50% increase from what she spent in April. The amount she spent in June was a 30% 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 |
+ 50% |
|
May |
150% |
100 u |
Change |
|
- 30 u |
June |
|
70 u |
(a)
Spending in April = 100%
Spending in May = 100% + 50% = 150%
150% = 1350
1% = 1350 ÷ 150 = 9
Spending in April
= 100%
= 100 x 9
= $900
Spending in May = 100 u
Spending in June = 100 u - 30 u = 70 u
100 u = 1350
1 u = 1350 ÷ 100 = 13.5
Spending in June
= 70 u
= 70 x 13.5
= $945
Total spending from April to June
= 900 + 1350 + 945
= $3195
(b)
Increase in spending in June compared to April
= 945 - 900
= $45
Percentage increase
=
Increase in spendingSpending in April x 100%
=
45900 x 100%
= 5%
Answer(s): (a) $3195; (b) 5%