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The average age of 9 students and their ...

The average age of 9 students and their teacher is 16 yr. The average age of the first four students is 19yr and that of the last five is 10 yr. The teacher's age is

A

36 yr

B

34 yr

C

30 yr

D

28 yr

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ARIHANT SSC-PROBLEM BASED ON AGES-FASK TRACK PRACTICE
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  14. The ratio between the present ages of Indira and Lizzy is 3:8 , respec...

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  17. At present, Kavita is twice Sarita's age 8 yr hence, the respective ra...

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  19. Four year ago, Shyam's age was 3//4 times of that of Ram. Four year h...

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