PSLE Linda saved $240 in May. This amount was a 20% decrease from what she saved in April. The amount she saved in June was a 10% increase from what she saved in May.
- What was the total amount that Linda saved from April to June?
- What was the percentage decrease in the amount Linda saved in June compared to April?
|
Savings |
April |
100% |
|
Change |
- 20% |
|
May |
80% |
100 u |
Change |
|
+ 10 u |
June |
|
110 u |
(a)
Savings in April = 100%
Savings in May = 100% - 20% = 80%
80% = 240
1% = 240 ÷ 80 = 3
Savings in April
= 100%
= 100 x 3
= $300
Savings in May = 100 u
Savings in June = 100 u + 10 u = 110 u
100 u = 240
1 u = 240 ÷ 100 = 2.4
Savings in June
= 110 u
= 110 x 2.4
= $264
Total savings from April to June
= 300 + 240 + 264
= $804
(b)
Decrease in savings in June compared to April
= 300 - 264
= $36
Percentage decrease
=
Decrease in savingsSavings in April x 100%
=
36300 x 100%
= 12%
Answer(s): (a) $804; (b) 12%