PSLE Linda saved $190 in May. This amount was a 5% decrease from what she saved in April. The amount she saved in June was a 20% increase 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 |
- 5% |
|
May |
95% |
100 u |
Change |
|
+ 20 u |
June |
|
120 u |
(a)
Savings in April = 100%
Savings in May = 100% - 5% = 95%
95% = 190
1% = 190 ÷ 95 = 2
Savings in April
= 100%
= 100 x 2
= $200
Savings in May = 100 u
Savings in June = 100 u + 20 u = 120 u
100 u = 190
1 u = 190 ÷ 100 = 1.9
Savings in June
= 120 u
= 120 x 1.9
= $228
Total savings from April to June
= 200 + 190 + 228
= $618
(b)
Increase in savings in June compared to April
= 228 - 200
= $28
Percentage increase
=
Increase in savingsSavings in April x 100%
=
28200 x 100%
= 14%
Answer(s): (a) $618; (b) 14%