Question

Tania went to America
She changed £325 into dollars

The exchange rate was £1 = $1.68

Change £325 into dollars

Answer 1

with working out

Answer 2

£1 = $1.68
so £325=325*1.68= $ 546

Answer 3

325*(1.68/1) = values in $

Answer 4

alright

the second part is:

When she came home she changed $117 into pounds

The new exchange rate was £1 = $1.50

Change $117 into pounds

Answer 5

it's the same way - 117*(1/1.5) = value in pounds
The main concept here is using the units given and ratio (exchange rate)

Answer 6

ok then thanks :D