PSLE Linda saved $450 in May. This amount was a 10% decrease from what she saved in April. The amount she saved in June was a 30% 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 |
- 10% |
|
May |
90% |
100 u |
Change |
|
+ 30 u |
June |
|
130 u |
(a)
Savings in April = 100%
Savings in May = 100% - 10% = 90%
90% = 450
1% = 450 ÷ 90 = 5
Savings in April
= 100%
= 100 x 5
= $500
Savings in May = 100 u
Savings in June = 100 u + 30 u = 130 u
100 u = 450
1 u = 450 ÷ 100 = 4.5
Savings in June
= 130 u
= 130 x 4.5
= $585
Total savings from April to June
= 500 + 450 + 585
= $1535
(b)
Increase in savings in June compared to April
= 585 - 500
= $85
Percentage increase
=
Increase in savingsSavings in April x 100%
=
85500 x 100%
= 17%
Answer(s): (a) $1535; (b) 17%