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Lesson Example Discussion Quiz: Class Homework

Quiz At Home

Title: Averages

Grade: 8-a Lesson: S2-L3

Explanation: Hello students, its time to revise the topic discussed earlier in the class. Solve the five problems given and fill the answers in the quiz sheet provided and get your score.

Quiz: at Home

Problem Id	Question	Description	Options
1	Solve the problem.	A pupil’s marks were wrongly entered as 73 instead of 53. Due to that the average marks for the class got increased by half. The number of pupils in the class is.	A) 40 B) 50 C) 30 D) 20
2	Solve the problem.	8 years ago, the average age of a family of 4 members was 28 years. Two children having been born (with age diference of 2 years), the present average age of the family is the same. Find present age of the youngest child.	A) 30 B) 40 C) 20 D) 10
3	Solve the problem.	The average age of a husband and his wife was 32 years at the time of their marriage. After five years they have a one-year old child. Find the average age of the family now.	A) 45 B) 19 C) 25 D) 14
4	Solve the problem.	The average age of 25 students in a group is 14 years. When teacher’s age is included to it, the average increases by one. What is the teacher’s age in years ?	A) 35 years B) 38 years C) 42 years D) 40 years
5	Solve the problem.	A motorist travels to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/hr. Find his average speed for the whole journey in km/hr.	A) 15 km/hr B) 32 km/hr C) 48 km/hr D) 23 km/hr

Problem Id

Question

Description

Options

Solve the problem.

A pupil’s marks were wrongly entered as 73 instead of 53. Due to that the average marks for the class got increased by half. The number of pupils in the class is.

A) 40

B) 50

C) 30

D) 20

Solve the problem.

8 years ago, the average age of a family of 4 members was 28 years. Two children having been born (with age diference of 2 years), the present average age of the family is the same. Find present age of the youngest child.

A) 30

B) 40

C) 20

D) 10

Solve the problem.

The average age of a husband and his wife was 32 years at the time of their marriage. After five years they have a one-year old child. Find the average age of the family now.

A) 45

B) 19

C) 25

D) 14

Solve the problem.

The average age of 25 students in a group is 14 years. When teacher’s age is included to it, the average increases by one. What is the teacher’s age in years ?

A) 35 years

B) 38 years

C) 42 years

D) 40 years

Solve the problem.

A motorist travels to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/hr. Find his average speed for the whole journey in km/hr.

A) 15 km/hr

B) 32 km/hr

C) 48 km/hr

D) 23 km/hr