present age of Fatima and adii are 15 and 20 respectively. after how many years the ratio of their ages will become 6:7 ?
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Step-by-step explanation:
Let the required years be x .
A/q ,
(15+x)/(20+x)=6/7
→105 +7x=120+6x
→x=15
Thus , required years =15
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