Fill in the blanks.
Adam and Bryan share some marbles.
When Adam gives 80 to Bryan, Adam's share decreases by 25%.
- 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 80.
- Number of marbles that Adam has at first = _____
|
Adam (%) |
Bryan (%) |
Before |
100% |
|
Change |
- 80 - 25% |
+ 80
|
After |
75% |
|
(a)
Number of marbles that Adam decreases by in percentage = 25%
(b)
Number of marbles that Adam has in the end = 100% - 25% = 75%
(c)
25% of Adam's marbles → 80
(d)
25% of Adam → 80
1% of Adam → 80 ÷ 25 = 3.2
100% of Bryan → 100 x 3.2 = 320
Number of marbles that Adam has at first = 320
Answer(s): (a) 25; (b) 75; (c) 25; (d) 320