Jan

Jan is 13 years old, and Peter is 21 years old. How many years will their age be in the ratio of 7:9?

Correct answer:

x =  15

Step-by-step explanation:

(13+x):(21+x) = 7:9 9 (13+x) = 7 (21+x)  7 (21+x)=9 (13+x)  2x=30  x=230=15  x=15



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