The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7, what is the age of the youngest person ?

The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7, what is the age of the youngest person ? ?

Created: 1 week ago | Updated: 1 week ago | Created By:

Imran Ahmed

18 years

8 years

16 years

42 years

0 2

Best Answer Explained in Below-:

Total age of them = 30 x 3 = 90 years. Sum of the ratios = 3 + 5 + 7 = 15 So, the age of the youngest person = 3 / 15 x 90 = 18 years

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The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7, what is the age of the youngest person ? ?

By selling an article, Shila earned a profit equal to 1/4 th of the price she bought it for. If she sod it at TK.375, what was the cost price ?

If A : B = 2 : 3, B : C = 4 : 5 and C : D = 6 : 7, what is the ratio between A to D ?

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