PSLE Linda saved $280 in May. This amount was a 40% increase from what she saved in April. The amount she saved in June was a 25% 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 |
|
- 25 u |
June |
|
75 u |
(a)
Savings in April = 100%
Savings in May = 100% + 40% = 140%
140% = 280
1% = 280 ÷ 140 = 2
Savings in April
= 100%
= 100 x 2
= $200
Savings in May = 100 u
Savings in June = 100 u - 25 u = 75 u
100 u = 280
1 u = 280 ÷ 100 = 2.8
Savings in June
= 75 u
= 75 x 2.8
= $210
Total savings from April to June
= 200 + 280 + 210
= $690
(b)
Increase in savings in June compared to April
= 210 - 200
= $10
Percentage increase
=
Increase in savingsSavings in April x 100%
=
10200 x 100%
= 5%
Answer(s): (a) $690; (b) 5%