Question

1. Emma Lee needs a new road bike. The sale price is 10% lower than the original price. The sale price is $450. Write and evaluate an expression for the original price. Uses for sale price and p for original price.​

Answer 1

• SP=450
• Discount=10%
• CP=?

100-10=90%=SP

`\\ \sf\longmapsto 90\%* x=450`

`\\ \sf\longmapsto (90)/(100)x=450`

`\\ \sf\longmapsto x=450* (100)/(90)`

`\\ \sf\longmapsto x=5(100)`

`\\ \sf\longmapsto CP=500`