Question

Purvi and her friends tipped their waiter a total of ten dollars for dinners that cost nine dollars, eight dollars, eleven dollars and twelve dollars each. Use a percent proportion to solve for the percent tip they left the waiter. Show your work.

Answer 1

first you will add up the price of all their meals combined:

9+8+7+12=36

then you will make a proportion to find the percent tipped:

\[\frac{ 10 }{ 36 }=\frac{ x }{ 100 }\]

Answer 2

10 for amount tipped.
36 for total meal cost.
x for percent tipped because it is unknown.
100 because percent is calculated out of 100.

Can you find the percent from here?

Answer 3

wooops read 'eleven' as 'seven'. the proportion is actually:

\[\frac{ 10 }{ 40 }=\frac{ x }{ 100 }\]