PSLE Linda saved $800 in May. This amount was a 20% decrease from what she saved in April. The amount she saved in June was a 50% 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 |
- 20% |
|
May |
80% |
100 u |
Change |
|
+ 50 u |
June |
|
150 u |
(a)
Savings in April = 100%
Savings in May = 100% - 20% = 80%
80% = 800
1% = 800 ÷ 80 = 10
Savings in April
= 100%
= 100 x 10
= $1000
Savings in May = 100 u
Savings in June = 100 u + 50 u = 150 u
100 u = 800
1 u = 800 ÷ 100 = 8
Savings in June
= 150 u
= 150 x 8
= $1200
Total savings from April to June
= 1000 + 800 + 1200
= $3000
(b)
Increase in savings in June compared to April
= 1200 - 1000
= $200
Percentage increase
=
Increase in savingsSavings in April x 100%
=
2001000 x 100%
= 20%
Answer(s): (a) $3000; (b) 20%