Question

2 triffles cost £7 how much will 6 triffles cost​

Answer 1

£21

Explanation:

let x be the required amount.

We can use the following proportion to solve this problem:

let x

`\sf (2\, triffles )/( £7) = (6 \, triffles )/( x)`

Cross-multiplying, we get:

`\sf 2\cdot x = 7 \cdot 6`

Divide both sides by 2.

`\sf \frac{\cancel{2} \cdot x}{\cancel{2}} = \frac{ 7 \cdot 3 \cdot \cancel{2}}{\cancel{2}}`

`\sf x = 7 \cdot 3`

`\sf x= 21`

Therefore, 6 triffles will cost £21.