As an estimation we are told £3 is $5.
What is the conversion rate from £ to $?
Give your answer rounded to 2 DP.

The conversion rate is 1.67

Step-by-step explanation:

Just simply divide 5 by 3 and round off 2 decimal places.

5 ÷ 3 = 1.66666

Round off 2 dp.

1.67.

$18

Step-by-step explanation:

we proceed by first solving for the unit cost of a sheet

then calculate the cost for any number of sheet

We are told that a builder could buy 6 sheets for the cost of $9

this means that one sheet would cost 9/6= $1.5

Now the builder buys 12 sheets

therefore the cost of 12 sheets will be

12*1.5= $18