Question

3) A sweater that was 15% off now costs $15.30. What was the original cost? A $24 B $15.45 C $30.3 D $18

Answer 1

A sweater that was 15% off now costs $15.30.

Amount of sweater afters sale = 15.30

as sale discount of 15%

So,15.30 - 15% of 15.30 =

simplify for the x :

`\begin{gathered} x-(15* x)/(100)=15.30 \\ x-(15x)/(100)=15.30 \\ (100x-15x)/(100)=15.30 \\ x=18 \\ So,\text{ the initiall the cost is\$18} \end{gathered}`

Answer : D) $18