Finding a Price

Question

1)At a restaurant, the bill comes to $80. If you decide to leave a 11% tip, how much is the tip?

2)At a restaurant, the bill comes to $74. If you decide to leave a 20% tip, how much is the tip?

3)Use the given information to find the new price. Round to the nearest cent.

Original Price: $30

Markup Rate: 21%

4)Use the given information to find the new price. Round to the nearest cent.

Original Price: $27

Discount Rate: 17%

5)Use the given information to find the new price. Round to the nearest cent.

Original Price: $64.9

Discount Rate: 27%

6)A couch went on a 14% off sale. The sale price is given as $172. What was the original price of the couch?

7)The population of Boomtown is currently 13000 and is expected to grow by 3.6% over the next year. What will its population be by then?

8)The population of Dullsville, on the other hand, is currently 12000 and is expected to decrease by 4.3% over the next year. What will its population be by then?

Answer 1

1) 11% of 80 = .11(80) = $8.80 tip

2) 20% of 74 = .2(74) = $14.80 tip

3) 30 + 21% markup = 30+.21(30) = 1.21(30) = $36.30

4) $27 with 17% discount = 27-.17(27) = .83(27) = $22.41

5) $64.90 + 27% discount = 64.9(.73)= $47.38 rounded up to nearest cent

6) 172 = original price minus 14% discount OP - .14OP = 172 = .86OP. OP = 172/.86 = $200

7) 13K +3.5% = 13K + .035(13K) = 1.035(13K) = 13,455 next year's population

8) 12K - 4.3% = 12K - .043(12K) = .957(12K) = 11,484 next year