SOLUTION: a student 1st reduced a number by 20 % and then increased it again by 20%.if the difference between the two new numbers was 8,then what is the orginal number?

Question 889277: a student 1st reduced a number by 20 % and then increased it again by 20%.if the difference between the two new numbers was 8,then what is the orginal number?
Answer by josgarithmetic(39633) (Show Source): You can put this solution on YOUR website!
Just follow the process as described!
Let u = the starting number.
20% increase is .
20% decrease is .

The student now has .

RELATED QUESTIONS
respected sir, 1] A student first reduced a certain number by 20% and then increased... (answered by arallie)

What is the difference between the sum of 1st 20 natural and 1st 20 whole... (answered by Edwin McCravy)

A number is increased by 20% and then decreased by 20%. the final value of the number is... (answered by macston)

a number is increased by 20% and then decreased by 20%.the final value of number (in... (answered by fractalier)

Two numbers have a difference of 14. If the larger number is increased by 5 and the... (answered by jorel1380,MathTherapy)

1) The length and breadth of a square are increased by 30% and 20%, respectively. The... (answered by amfagge92)

If a number multiplied by 8 and then increased by 5 is 20 more than the square of the... (answered by phoihe001,y6n3o9p4)

In a set of two numbers, three times the 1st number decreased by four times the 2nd... (answered by josgarithmetic)

If the length of a rectangle is increased by 40% and the breadth is reduced by 20%, what... (answered by math_helper,rothauserc,MathTherapy)