Question

find a number whose fourth part when decrease by 20 is equal to its fifth part increase by 30​

Answer 1

Answer:

let the number be X

its fourth part=X/4

it's fifth part=X/5

a/q

X/4-20=X/5+30

=X/4-x/5=30-20

=(5x-4x)/20=10

=X/20=10

=X=20*10

=200