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