Question

Five times a number is equal to 300 percent increase in 60 percent. If one fourth of the same number is equal to 80 percent decrease in other number, then the other number is:
Please please need this very urgent.. please will mark u brainliest who will give the correct answer.

Answer 1

Answer:

other number is 75

Step-by-step explanation:

let the number is x

five time of this number is 5x

increase = (5x-x) = 4x

that is equal increase 300% in 60

after increase number = (300+100)/100 ×60

so 4x = 400/100 × 60

or x = 240/4

or x= 60

so the number is 60

1/4 of this number is = 60/4= 15

this 1/ 4 of number equal to 80 % decrease the other number

after decrease other number= (100-80)% = 20%

so 15= 20 % of other number

or 15= 20/ 100 × other number

other number = 15×100/20 = 15×5

= 75

other number is 75