Question

Gavin bought 4 packages of cheese. Each package weighed 1.08 kilograms. How many kilograms of cheese did Gavin buy?

Answer 1

Gavin bought `4.32` kilograms of cheese.

Explanation:

As `1` package of cheese weighs `1.08` kilograms

`4` packages of cheese weigh `1.08xx4=4.32` kilograms

Hence, Gavin bought `4.32` kilograms of cheese.

Answer 2

If you do not like multiplying decimals this is another approach

`4.32` Kg

Explanation:

Write `1.08 " as "1+8/100`

'........................................................................
`color(navy)("Consider the "8/100" from "1+8/100)`

write this as `8xx1/100`

But we have 4 packages each containing this. So the total for this part is:

`8xx4xx1/100" "=" "32xx1/100" "=" "32/100color(red)(" "=" "0.32)`

'......................................................................

`color(navy)("Consider the 1 from "1+8/100")`

But we have 4 packages each containing this. So the total for this part is:

`color(olivedrab)(4xx1=4)`
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
`color(navy)("Putting it all together")`

`4xx(1+8/100) = color(olivedrab)(4)+color(red)(0.32) = 4.32`