225k views
1 vote
40 nails hold 5 rafters. 96 nails hold r rafters.

User Kam Sen
by
8.9k points

2 Answers

7 votes
ratio and proportion

nails:rafters=40:5
40/5=96/r
we can simplify left side
8/1=96/r
times both sides by r
8r=96
divide both sides by 8
r=12

12 rafters
User MurielK
by
8.4k points
6 votes
5 times 96 divided by 40 gives you 12. 96 nails hold 12 rafters.
User Flueras Bogdan
by
8.2k points
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