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Chris’s new car gets 42 miles per gallon. What is the equation that represents y, the total miles driven on x gallons of gas?
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<h3>Given :</h3>
Seena’s mother is 4 times as old as Seena. After 5 years her mother will be 3 times as old as she will be then .Find their present ages.
<h3>Solution :</h3>✧ <u>Let us assume</u> :
Seena's age be x
Her mother's age be 4x
✧ <u>After </u><u>5</u><u> years</u> :
Seena's age = x + 5
Her mother's age = 4x + 5
✧ <u>Ratio of age after </u><u>5</u><u> years</u> :
Seena's mother = 3
Seena's ratio = 1
Hence, the equation is :
By cross multiplying we get
Hence, the ages are
Seena's age = x = 10 yrs
Her mother's age = 4x = 4 × 10 = 40 years
∴ <u>Seena's age is 10 and her mother's is 40 respectively</u>