Average Word Problems

8) Paulo got these markers in three tests: 72, 80 and 82. He had one more test to sit. He wanted an average of 80 for the four tests. What mark must he get in the fourth test?

• 78

• 80

• 84

• 86

A cricketer has scored 58, 54, and 64 points in the first three innings. He wants his average score for the first four innings to be a 61. What does he need to score in the 4th inning?

• 72

• 58

• 68

• 89

Daniel’s grades for the first three tests in a year was 73, 56, and 83. He worked very hard for the last test in that year to improve his average mark to 75. How many marks did he score for the last test to achieve this?

• 78

• 79

• 87

• 88

The average height of a family of five is 150 cm. If the heights of 4 family members is 153, 150, 151 and 152, find the height of the fifth member.

• 143

• 144

• 145

• 146

The table below shows the snowfall in a north-eastern city in inches for the first week in January.

Find the average rate of change in the number of inches of snowfall from January 8 to January 11.

• 2/3 in/day

• 2 in./day

• 3 in./day

• 6 in./day

Find the average rate of change of Pete's height from 3 years old to 5 years old.

• 2 inches per year

• 8 inches per year

• 2 years

• 4 inches per year

A store sees 120 customers in 8 hours. How many customers will there be in an hour? Select all that apply in solving this question.

• Only find unit rate

• Find AND use the unit rate

• 15 customers

• 1/15 customers

Which is the better deal buying?

• Oreos at $2.98 for 15 oz

• Chips Ahoy at $2.50 for 14 oz

A population in one city is 480,000 and it doubles

every 6 years. What will the population be in 18 years?

There will be _________________people in 18 years.

The average weight of Jen, Tara, and Alison is 45 kg. Jen and Tara together weigh 85 kg. Find Alison's weight.

• 50

• 52

• 47

• 53