PSLE Linda saved $840 in May. This amount was a 40% increase from what she saved in April. The amount she saved in June was a 10% decrease from what she saved in May.
- What was the total amount that Linda saved from April to June?
- What was the percentage increase in the amount Linda saved in June compared to April?
|
Savings |
April |
100% |
|
Change |
+ 40% |
|
May |
140% |
100 u |
Change |
|
- 10 u |
June |
|
90 u |
(a)
Savings in April = 100%
Savings in May = 100% + 40% = 140%
140% = 840
1% = 840 ÷ 140 = 6
Savings in April
= 100%
= 100 x 6
= $600
Savings in May = 100 u
Savings in June = 100 u - 10 u = 90 u
100 u = 840
1 u = 840 ÷ 100 = 8.4
Savings in June
= 90 u
= 90 x 8.4
= $756
Total savings from April to June
= 600 + 840 + 756
= $2196
(b)
Increase in savings in June compared to April
= 756 - 600
= $156
Percentage increase
=
Increase in savingsSavings in April x 100%
=
156600 x 100%
= 26%
Answer(s): (a) $2196; (b) 26%