Question

which expression can represent 70% of x3(x/4)-1/2(×/10)3(x/4)-(x/10)(x/2)+(x/10)(x/2+1/2(×/4)

Answer 1

70% of x = 0.7x

Considering the first option

3(x/4)-1/2(×/10)

= 0.75x -0.05x

= 0.7x

Hence the first option is equivalent to 70% of x