Question

please answer all question plz​

Answer 1

hey! your answer↓

1.let the number be x

20% of x=90

20x/100=90

20x=9000

x=9000/20

x=450

hope that it will help you

Answer 2

let ,the number is x

x*20% = 90

x*20/100 = 90

x. = 90*100/20

= 450

2) let , the no is x

60. * x% = 45

60* x/100 = 45

6x/10 = 45

6x = 450

x. = 450/6 = 75%

3) let the no is x

x% * 350 = 21

x/100* 350 = 21

35 x./10 = 21

35 x = 21*10

x = 21*10/35 = 30/5 = 6%