Finding Sales Price
Finding Original Price
Proportional Equations
Proportional Equations 2
100

A Laptop has a marked price of $75. The shop offered a discount of one-fifth off. What is the sales price of the item?

$60

100

The price of a math book after a discount of 20% off is 40. What is the original price of the math book?

$50

100

Stanley works at ice cream shop. In 3 hours, he makes $30. Write an equation that shows how the dollars earned (d) is proportional to hours worked (h) 

d = 10h

100

What is the standard equation for proportional relationships? 

y= kx

200

 A swimsuit that cost $25 was on sale for 20% off. Monica calculated the sales price as $20. Is she correct or incorrect? If she is incorrect, write the correct sales price. 


She was correct
200

A book is on sale for 40% off, and costs $9. What was the original price of the book 

The original price of the book was $15
200

The dry cleaning fee for 3 pairs of pants is $18. Write a relationship that  shows how money spent (m) is proportional to pants cleaned (p)

m = 6p

200
What does k stand for? 

k = constant

300

A video game was on sale for 50% off. The original price of the gam was $150. What is the sales price of the item?  

$75

300

If Peter pays $84 to buy a watch after a discount of 20%, find the original price of the watch.

$105

300
 Justin runs at a constant rate, traveling 16 km in 2 hours. Write an equation that shows the relationship between k (kilometers) and h (hours).

k= 8h

300

If I need to find the constant, what formula can I use? 

k = y/x

400

A dinner set was  on sale for 3/5 off. The original price of the dinner set  was $200. What is the sales price of the item? 

$80

400

 A phone is on sale for 2 fifths off. The sales price of the phone is $210

$350

400

A recipe says that 2 cups of dry rice will serve 6 people. Write an equation that shows how people (p)is proportional to cups of rice (c)

p=3c
400

When is our End of Module Test? 

Wednesday, September 13th
500

The price of a math book is 50$, if the book is on sale for 40% off. How much will you pay for the book?   book?

$30

500

What is the original price of an apple that has a 20% discount and cost $2. 

$2.50

500

Amy earns $25 for 2 hours of babysitting. If she works at this constant rate, write an equation that represents h (hours) to the amount of money she makes (d)

d= 12.5h

500

When is our homework due this week? 

Wednesday, September 13th