David and Denise share n pears in the ratio 4:9. If n = 39 how many pears does David have?
1 answer:
Answer:
David has 12 pears.
Step-by-step explanation:
4 + 9 = 13
39 / 13 = 3
3 x 4 = 12
3 x 9 = 27
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Answer:
we have to learn this in middle school
Step-by-step explanation:
Function: 12+0.5x
12+0.5x=18.5
0.5x=6.5
x=13 days