Question

4. The strength of a school increased by 20% in one year, and decreased by 20% in
how much per cent ?
the next year. Is the final strength greater or less than the original one, and by
in 10 then find the number.​

Answer 1

Answer:

4% less by its original

Step-by-step explanation:

let original strength =x

increased by 20%=x+20x/100=120x/100

and

decreased by 20% next year

=(120x/100)-(120x/100)*20/100

=(120x/100)-(24x/100)

=96x/100

Gain /loss =96x/100 - x = -4x/100=4%

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