Question

Work out the cost of 12kg of potatoes and 1 1/2kg of carrots

Answer 1

The cost is #15.90

Explanation:

See comment for complete question

Given

`P \to Potato`

`C \to Carrot`

`3P + 2C = 5.08`

`P = 1.24`

Required

`12P + 1(1)/(2)C = ??`

First, we solve for C

Substitute
`P = 1.24` in
`3P + 2C = 5.08`

`3 * 1.24 + 2C = 5.08`

`3.72 + 2C = 5.08`

Collect like terms

`2C = 5.08 - 3.72`

`2C = 1.36`

Solve for C

`C = (1.36)/(2)`

`C = 0.68`

So, we have:

`P = 1.24`

`C = 0.68`

`12P + 1(1)/(2)C = ??` becomes

`12P + 1(1)/(2)C = 12*1.24 + 1(1)/(2)*0.68`

`12P + 1(1)/(2)C = 14.88 + 1.02`

`12P + 1(1)/(2)C = 15.90`