Question

X x 30 %  +  X x 1/4 + 89 = 100

Answer 1

x.3/10+x.1/4+89=100

x.(3/10+1/4)+89=100

x.11/20+89=100

x.11/20=100-89

x.11/20=11

x=11:11/20

x=20

Answer 2

 X x 3/10 + X x 1/4 + 89 = 100

    X x ( 3/10 + 1/4 ) + 89 = 100

X x 11/20 + 89 = 100

X x 11/20 = 100 - 89

X x 11/20 = 11

X = 11 : 11/20 

X = 20

Answer 3

X x 30 %  +  X x 1/4 + 89 = 100

X x 3/10 + X x 1/4 + 89 = 100

X x ( 3/10 + 1/4 ) + 89 = 100

X x 11/20 + 89 = 100

X x 11/20 = 100 - 89

X x 11/20 = 11

X = 11 : 11/20 

X = 20

Answer 4

`X x 30 %  +  X x 1/4 + 89 = 100`

`x xx 30/100+x xx1/4+89=100`

`x xx3/10+x xx1/4+89=100`

`x xx(3/10+1/4)+89=100`

`x xx 11/20+89=100`

`x xx11/20=100-89`

`x xx11/20=11`

`x=11:11/20`

`x=11xx20/11`

`x=11`