Fill in the blanks.
Adam and Bryan share some marbles.
When Adam gives 30 to Bryan, Adam's share decreases by 50%.
- 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 30.
- Number of marbles that Adam has at first = _____
|
Adam (%) |
Bryan (%) |
Before |
100% |
|
Change |
- 30 - 50% |
+ 30
|
After |
50% |
|
(a)
Number of marbles that Adam decreases by in percentage = 50%
(b)
Number of marbles that Adam has in the end = 100% - 50% = 50%
(c)
50% of Adam's marbles → 30
(d)
50% of Adam → 30
1% of Adam → 30 ÷ 50 = 0.6
100% of Bryan → 100 x 0.6 = 60
Number of marbles that Adam has at first = 60
Answer(s): (a) 50; (b) 50; (c) 50; (d) 60