A number is increased by 50% and then it is decreased by 10%. Find the total percentage increase or decrease in the value of the number.
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Answer:
let the number be x
according to question:
new number= (x+1/2x) =(3/2)x
=3x/2-1/10(3/2) x
=3x/2-3x/20
=27x/20
increase in number= 27x/20-x
= 7x/20
percentage = (7x/20÷x) ×100%
= 7/20×100%
= 7×5 %
= 35%
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