PSLE Linda saved $130 in May. This amount was a 35% decrease from what she saved in April. The amount she saved in June was a 40% 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 |
- 35% |
|
May |
65% |
100 u |
Change |
|
+ 40 u |
June |
|
140 u |
(a)
Savings in April = 100%
Savings in May = 100% - 35% = 65%
65% = 130
1% = 130 ÷ 65 = 2
Savings in April
= 100%
= 100 x 2
= $200
Savings in May = 100 u
Savings in June = 100 u + 40 u = 140 u
100 u = 130
1 u = 130 ÷ 100 = 1.3
Savings in June
= 140 u
= 140 x 1.3
= $182
Total savings from April to June
= 200 + 130 + 182
= $512
(b)
Decrease in savings in June compared to April
= 200 - 182
= $18
Percentage decrease
=
Decrease in savingsSavings in April x 100%
=
18200 x 100%
= 9%
Answer(s): (a) $512; (b) 9%