Question

Material for a dress costs £5.50 per metre.
find the cost of 10cm and 70cm

Answer 1

The cost of 10 cm and 70 cm are £0.55 and £3.85 respectively.

Explanation:

Material for a dress costs £5.50 per meter.

We know that, 1 meter = 100 cm.

Suppose, the cost of 10 cm material is
`x` and the cost of 70 cm material is
`y`

Now, according to the ratio of "cost" to the "length of material" , we will get.......

`(x)/(10) =(5.50)/(100)\\ \\ 100x=10*5.50=55\\ \\ x=(55)/(100)=0.55`

and

`(y)/(70) =(5.50)/(100)\\ \\ 100y=70*5.50=385\\ \\ x=(385)/(100)=3.85`

So, the cost of 10 cm material is £0.55 and the cost of 70 cm material is £3.85