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

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

Step-by-step 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 and the cost of 70 cm material is

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

and

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

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x