PSLE Linda saved $1015 in May. This amount was a 45% increase from what she saved in April. The amount she saved in June was a 20% decrease 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 |
+ 45% |
|
May |
145% |
100 u |
Change |
|
- 20 u |
June |
|
80 u |
(a)
Savings in April = 100%
Savings in May = 100% + 45% = 145%
145% = 1015
1% = 1015 ÷ 145 = 7
Savings in April
= 100%
= 100 x 7
= $700
Savings in May = 100 u
Savings in June = 100 u - 20 u = 80 u
100 u = 1015
1 u = 1015 ÷ 100 = 10.15
Savings in June
= 80 u
= 80 x 10.15
= $812
Total savings from April to June
= 700 + 1015 + 812
= $2527
(b)
Increase in savings in June compared to April
= 812 - 700
= $112
Percentage increase
=
Increase in savingsSavings in April x 100%
=
112700 x 100%
= 16%
Answer(s): (a) $2527; (b) 16%