Question

the average age of some males and 15 females is 18 years the sum of ages of female is 240 and average age of the men is 20. Then find the no. of men. ARGENT PLEASE HELP FAST!!​

Answer 1

Answer:

$let \: the \: no. \: of \: males \: be \: = x\\18 = \frac{x \times 20 + 240}{x + 15} \\ = 18x + 270 = 20x + 240 \\ = 20x - 18x = 270 - 240 \\ 2x = 30 \\ x \ =\frac{30}{2} = 15$

Step-by-step explanation:

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