Fill in the blanks.
Bryan and Adam share some marbles.
When Bryan gives 80 to Adam, Bryan's share decreases by 20%.
- Number of marbles that Bryan decreases by in percentage = _____%
- Number of marbles that Bryan has in the end in percentage = _____ %
- _____% of Bryan's marbles is the same as 80.
- Number of marbles that Bryan has at first = _____
|
Bryan (%) |
Adam (%) |
Before |
100% |
|
Change |
- 80 - 20% |
+ 80
|
After |
80% |
|
(a)
Number of marbles that Bryan decreases by in percentage = 20%
(b)
Number of marbles that Bryan has in the end = 100% - 20% = 80%
(c)
20% of Bryan's marbles → 80
(d)
20% of Bryan → 80
1% of Bryan → 80 ÷ 20 = 4
100% of Adam → 100 x 4 = 400
Number of marbles that Bryan has at first = 400
Answer(s): (a) 20; (b) 80; (c) 20; (d) 400