Peter has 900 New Zealand dollars. If 1 u.s dollar equals 1.4167 New Zealand dollars , about how many US dollars can Peter buy for his New Zealand dollars
Since 1 us dollar is 1.4167 NYZ then 1 nyz is 1/1.4167 or 0.7USD
So it follows that 900 NYZ = 900*0.7=630 USD.
Note that I've rounded to one decimal point so there's a slight deviation the exact rate is 0.7058... and exact USD amount 635.2791. Cheers