Answer:
9 hours
Step-by-step explanation:
$56.00 -------> 7 hours
$1 ---------------> (7 / 56) hours
$72 -------------> (7/56) x 72 = 9 hours
Y= 1/5, this is because 1/2 is 5/10 and 1/5 is 2/10, therefore 5/10 + 2/10= 7/10
If you're looking for which of these has the best price, the answer would be the first one, since it is the cheapest out of the 4. If that's not the right way to solve it, let me know!
Since this is a permutation, it would be 5!(factorial)
so 5x4x3x2x1
