Unit 4 Review Questions and Answers

Unit 4 Test: Tuesday, December 4th

Question 1

What is 60% of 40?

Answer 1

24

Question 2

What is 15% of 6kg?

Answer 2

0.9kg

Question 3

A box has 840 mugs. 30% of them are green mugs. How many green mugs are in the box?

Answer 3

There are 252 green mugs in the box.

Question 4

There are cubes of three different colors in a box. 26% of them are blue, 18% are white and the rest are red. What percent of the cubes is red?

Answer 4

56% of the cubes are red

Question 5

There are cubes of three different colors in a box. 26% of them are blue, 18% are white and the rest are red.

If there are 200 cubes, what is the total number of blue and red cubes?

Answer 5

164 of the cubes are red and blue

Question 6

Bob earns $750 in a week. He got a 15% increase in his pay the following week. What is the increase in his pay?

Answer 6

His increase in pay is $112.50

Question 7

A party was being organized for 130 people. There was a 30% increase in the number of guests in the guest list. How many more people were invited?

Answer 7

39 more people were invited

Question 8

There are 40 students in a class. On Monday, 5% of the students were absent from school. On Tuesday, 10 students were absent from school.

How many students were absent from school on Monday?

Answer 8

2 students were absent from school on Monday

Question 9

There are 40 students in a class. On Monday, 5% of the students were absent from school. On Tuesday, 10 students were absent from school.

What was the percent increase in the number of absentees from Monday to Tuesday?

Answer 9

400% increase in the number of absentees from Monday to Tuesday

Question 10

The price of a book was $16. When it became popular, the new price was $30. What was the percent increase in its price?

Answer 10

87.5% increase in price

Question(s) 11

Find the amount Janice has to pay for the items below if the sales tax is 12%. A calculator priced at $45 A sofa priced at $1250 A stereo priced at $640

Answer(s) 11

Calculator: $50.40

Sofa set: $1,400

Stereo: $716.80

Question 12

Mr. Tim’s family dined at Morton’s Restaurant and the bill came up to $128. He needed to pay a tip of 15%. What was the total amount Mr. Tim paid?

Answer 12

Mr. Tim paid $147.20

Question 13

A box of biscuits weighs 300 g with an additional 20%. What was the weight of the original box of biscuits?

Answer 13

The box of biscuits originally weighed 250g

Question 14

Isaac placed his money in a bank with a 5% interest per year. He had $525 in the bank after a year. How much was his original deposit?

Answer 14

He originally deposited $500 in his account

FINAL QUESTION

A tool set costs $90. However, there was a 25% discount when Mr. Manning bought it. He had to pay a sales tax of 10%. How much did he pay for the tool set in the end?

FINAL ANSWER

Mr. Manning paid $74.25 for the tool set