Question

The cost of 10 metres of cloth is Rs 30. How much would 7 metres of the same cloth cost?​

Answer 1

Answer:

21 rupee is the cost of 7 metre clothes...

Answer 2

$\large\mathfrak \pink{Solution:-}$

$\underline \mathbb{TO \: FIND:-}$

Cost of 7 metres of the same cloth.

$\underline \mathbb{SOLVED \:BY:-}$

Unitary Method.

$\underline \mathbb{BY \: THE \: PROBLEM:-}$

$Cost \: of \: 10 \: metres \: = ₹ 30 \\ Cost \: of \: 1 \: metres \: = ₹ \frac{30}{10} \\ \\ Cost \: of \: 7 \: metres \: = ₹ \cancel\frac{30 \times 7}{10} = ₹21$

$\underline \mathbb{ANSWER:-}$

Cost of 7 metres of the same cloth is ₹21.