Page 55 - Maths Skills - 7

Simple Equations 53

(c) A is true but R is false. SUBJECTIVE TYPE QUESTIONS

(d) A is false but R is true. F. Solve the following word problems
Q. 1. Assertion (A): 6x – 17 = 0 is an equation. 1. Five added to one-third of a number gives twice

Reason (R): An equation is a statement in which the number. Find the number.
the values of two mathematical 2. A number when multiplied by 6 is increased by
expressions are equal. 45, find the number.
Q. 2. Assertion (A): The solution of the equation 3. During Van-Mahotsava, Class VII A and VII B
2x – 4 = 12 is x = 8. planted trees in their school premises. Section A
Reason (R): For x = –4, L.H.S. is equal to R.H.S. planted 5 more than thrice the number of trees
Q. 3. Assertion (A): The solution of the equation, planted by Section B. Together they planted 221
trees. Find the trees planted by Section A.
7x – 2 = 26 is x = 4.
Reason (R): The value of the variable in an 4. A man is 4-times as old as his daughter. After
16 years, he will be twice as old as his daughter.
equation for which the equation is satisfied is Find daughter's age.
called the solution of the equation.
5. Ram says that he has 7 marbles more than five
times the marbles Roshan has. Ram has 37 marbles.
How many marbles does Roshan have?

INTEGRATED QUESTION
G. Account Vs Maths

Neha and Rohan collected data of marks obtained in the subjects Mathematics and English by some of their
friends. This data is shown with the help of the table given below. Answer the questions given below and find
the unknown numbers in this table.

Friends Mathematics English

Mohan 6 X

Kanika Y 5

Tarun 7 8

Jeevan P 8

Sonia 5 Z

1. Two times of Mohan’s English marks is three times of his mathematics marks.

2. Six less than twice of Kanika’s Mathematics marks is Tarun’s English marks.

3. Three more than Jeevan’s mathematics marks is equal to Tarun’s English marks.

4. Twice the marks that Mohan got in mathematics is three more than three times of Sonia’s marks in English.