Question

I’m really confused on this show all work please

Answer 1

Sally's grocery bill
`=0.95 c`

Explanation:

Given that

Sally has a discount card that reduce the price of grocery bill in certain grocery store by 5%. It c represent the cost of Sally's groceries.

She got discount =
`(5)/(100) c`

Therefore Sally's grocery bill =
`c - (5)/(100) c`
`=(100c - 5c)/(100)`
`=(95c)/(100)`
`=0.95 c`