а The average age of 25 boys in a class decreases by 6 months when a new boy takes the place of a 20 year old boy. Find age of new boy
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Step-by-step explanation:
40.
Let N be the number of children.
3/5 of N is 24.
Written as an equation, this translates to:
3/5 x N = 24
Multiplying both sides of the equation by 5/3 results in
5/3 x 3/5 x N = 5/3 x 24
Reducing, this becomes
1 x N = 5 x (24/3)
Reduces to
N = 5 x 8
N=40
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Answer:20years simple
Step-by-step explanation:
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