Question

H. Pete wants a new truck. The sale price is 15% lower than the original price. The sale price is $20,000. Write and evaluate an expression for the original price Uses for sale price and p for original price. L. 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. J. You can find the distance in feet that an object falls in t seconds using the expression 1612. If you drop a ball from a tall building, how far does the ball fall in 5 seconds?​

Answer 1

Solution:-1

• SP=20000
• Discount=15%
• CP=?

100-15=85%=SP

`\\ \sf\longmapsto 85\%* x=20000`

`\\ \sf\longmapsto (85)/(100)x=20000`

`\\ \sf\longmapsto x=20000* (100)/(85)`

`\\ \sf\longmapsto x=235.2(100)`

`\\ \sf\longmapsto CP=23520`

Solution:-2

• 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`