Question

THE average age of 5. officers in a department is 32 years. If the age of supervisor is added the average increased by 1 what' is the supervisor age!?

: 30
: 32
: 40
: 49

can any one explain by step by step
best answer will get amazon vouchers worth 200$​

Answer 1

Answer:

Given avg age of 5 officers is 32

let the sum of their ages be x

now , avg age = x/no of officers

x/5=32

or x= 160 years

when the age of supervisor is added, new avg=33

Let the age of supervisor be y

then, (160+y)/6= 33

160/6 + y/6= 33

y/6= 33- 160/6

y/6= 198/6-160/6

y/6= 38/6

y =38/6×6

y = 38

hence,the age of supervisor is 38 years

Step-by-step explanation:

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