Hector wants to tend a parcel to Spain. His parcel is a cuboid with dimensions 10cm, 10cm and 40cm. He looks at the prices of two companies, WeGoFast and ParcelsFly. WeGoFast Total cost: Sum, in cm, of the 3 dimensions x £1.20. ParcelsFly Total cost: Volume measured in cm^3 x £0.02. Find the cost of spending the parcel with each company. Give each of your answers in pounds. (£)

22

Step-by-step explanation:

Let X be the time for only a small drain, the work completed would be unity.

 The small drain has been open for a total of 11 hours, one hour next to the large one, and 10 hours alone.

We have that large drainage can accomplish this in 2 hours.

We have the following system:

1/2 + 11 / x = 1

solving, we have:

11 / x = 1 - 1/2

11 / x = 1/2

x = 11 * 2

x = 22

I mean it would take a total of 22 hours for the small drain alone