Fill in the blanks.
Adam and Bryan share some marbles.
When Adam gives 90 to Bryan, Adam's share decreases by 40%.
- Number of marbles that Adam decreases by in percentage = _____%
- Number of marbles that Adam has in the end in percentage = _____ %
- _____% of Adam's marbles is the same as 90.
- Number of marbles that Adam has at first = _____
|
Adam (%) |
Bryan (%) |
Before |
100% |
|
Change |
- 90 - 40% |
+ 90
|
After |
60% |
|
(a)
Number of marbles that Adam decreases by in percentage = 40%
(b)
Number of marbles that Adam has in the end = 100% - 40% = 60%
(c)
40% of Adam's marbles → 90
(d)
40% of Adam → 90
1% of Adam → 90 ÷ 40 = 2.25
100% of Bryan → 100 x 2.25 = 225
Number of marbles that Adam has at first = 225
Answer(s): (a) 40; (b) 60; (c) 40; (d) 225