Question

the average profit of 5 years of a company is 22%. profit of last 4 years is 12%, 30%, 20% and 17%.what was profit of first year?​

Answer 1

Step-by-step explanation:

mean is equal to number of observations by total number of observations

let the profit of first year be x percent then

$(x + 12 + 30 + 20 + 17 ) \div 5 = 22$

$79 + x = 110$

$x = 31$

hence the profit of first year was 31%

Answer 2

Answer:

Profit of first year = 31%

Step-by-step explanation:

We are provided that the average profit of 5 years of a company is 22%.

And profit of last 4 years is 12%, 30%, 20% and 17%.

Now, the average formula is given by;

         Average profit = Sum of all 5 years profit ÷ Total number of years

Let profit of first year be x% so;

         Average profit of 5 years = $\frac{x +12+30+20+17 }{5}$

              22 * 5 = x + 79

                x = 110 - 79 = 31.

Hence, Profit of first year = 31%.