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# Look at this riddle? If she answers the riddle correctly how ever will she pay for the pencils

**Solution:**

Let the cost of one pencil be x.

We represent the linear equation as

7x = 5x + 6

7x - 5x = 6

2x = 6

x = 6/2

x = 3

Hence, 10x = 30

Thus, the cost of ten pencils is ₹ 30.

**✦ Try This:** Look at this riddle? If she answers the riddle correctly however will she pay for the pencils?

Let the cost of one pencil be x.

A/Q

6x = 4x + 8

6x - 4x = 8

2x = 8

x = 8/2

x = 4

Hence, 12x = 48

Thus, the cost of 12 pencils is ₹ 48.

**☛ Also Check: **NCERT Solutions for Class 7 Maths Chapter 4

**NCERT Exemplar Class 7 Maths Chapter 4 Problem 100**

## Look at this riddle? If she answers the riddle correctly how ever will she pay for the pencils

**Summary:**

Thus, the cost of ten pencils is ₹ 30

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