Opal had 14 more puffs than Barbara at first. After Opal ate 6 puffs, she had five times as many puffs as Barbara in the end. How many puffs did Barbara have?
| |
Barbara |
Opal |
| Before |
1 u |
1 u + 14 |
| Change |
|
- 6 |
| After |
1 u |
1 u + 8 |
Comparing Barbara
and Opal in the end |
1 u |
5 u |
The number of puffs that Barbara had remains unchanged.
Number of puffs that Opal had in the end
= 5 x 1 u
= 5 u
5 u = 1 u + 8
5 u - 1 u = 8
4 u = 8
1 u = 8 ÷ 4 = 2
Number of puffs that Barbara had
= 1 u
= 2
Answer(s): 2
