Fill in the blanks.
Adam has some marbles.
Adam gives some marbles away.
The number of marbles now is a decrease of 30% compared to what Adam has at first.
- Number of marbles that Adam has at first = _____ u
- Number of marbles that Adam gives away = _____ u
- Number of marbles that Adam has in the end = _____ u
|
Adam (Units) |
Adam (%) |
Before |
10 u |
100% |
Change |
- 3 u |
- 30% |
After |
7 u |
70% |
(a)
Change percentage into units.
30% =
30100 =
310 Number of marbles that Adam has at first = 10 u
(b)
Number of marbles that Adam gives away = 3 u
(c)
Number of marbles that Adam has in the end
= 10 u - 3 u
= 7 u
Answer(s): (a) 10; (b) 3; (c) 7