PSLE Linda spent $1160 in May. This amount was a 45% 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 |
+ 45% |
|
May |
145% |
100 u |
Change |
|
- 20 u |
June |
|
80 u |
(a)
Spending in April = 100%
Spending in May = 100% + 45% = 145%
145% = 1160
1% = 1160 ÷ 145 = 8
Spending in April
= 100%
= 100 x 8
= $800
Spending in May = 100 u
Spending in June = 100 u - 20 u = 80 u
100 u = 1160
1 u = 1160 ÷ 100 = 11.6
Spending in June
= 80 u
= 80 x 11.6
= $928
Total spending from April to June
= 800 + 1160 + 928
= $2888
(b)
Increase in spending in June compared to April
= 928 - 800
= $128
Percentage increase
=
Increase in spendingSpending in April x 100%
=
128800 x 100%
= 16%
Answer(s): (a) $2888; (b) 16%