Fill in the blanks.
Adam receives some allowance.
If he increases his savings by 30%,
his spending decreases by 40%.
- Amount of savings = _____ u
- Amount of spending = _____ u
- Total amount of allowance = _____ u
- Difference in the amount of savings and spending = _____ u
|
Savings |
Spending |
Before |
10 x 2 = 20 u |
5 x 3 = 15 u |
If change |
+ 3 x 2 = + 6 u |
- 2 x 3 = - 6 u |
After |
13 x 2 = 26 u |
3 x 3 = 9 u |
(a)
Change percentage into units.
30% of savings = 40% of spending
310 of savings =
25 of spending
Make the numerators the same.
LCM of 3 and 2 = 6
3 x 210 x 2 of savings =
2 x 35 x 3 of spending
620 of savings =
615 of spending
Amount of savings = 20 u
(b)
Amount of spending = 15 u
(c)
Total amount of allowance
= 20 u + 15 u
= 35 u
(d)
Difference in the amount of savings and spending
= 20 u - 15 u
= 5 u
Answer(s): (a) 20; (b) 15; (c) 35; (d) 5