Answer:
$22
Step-by-step explanation:
We have to find the highest common factor of the 3 numbers shown.
HCF of 66, 110, 132
We need to break each into product of prime numbers and then take the prime common number with the least factor.
66 - 2 * 3 * 11
110 - 2 * 5 * 11
132 - 2 * 2 * 3 * 11
The common factors are 2 and 11. We take 2 and 11 and multiply, so we have
2 * 11 = 22
Thus, $22 would be the highest possible cost of each sweater
