Fill in the blanks.
Bryan and Adam share some marbles.
When Bryan gives 90 to Adam, Bryan's share decreases by 30%.
- 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 90.
- Number of marbles that Bryan has at first = _____
|
Bryan (%) |
Adam (%) |
Before |
100% |
|
Change |
- 90 - 30% |
+ 90
|
After |
70% |
|
(a)
Number of marbles that Bryan decreases by in percentage = 30%
(b)
Number of marbles that Bryan has in the end = 100% - 30% = 70%
(c)
30% of Bryan's marbles → 90
(d)
30% of Bryan → 90
1% of Bryan → 90 ÷ 30 = 3
100% of Adam → 100 x 3 = 300
Number of marbles that Bryan has at first = 300
Answer(s): (a) 30; (b) 70; (c) 30; (d) 300