Given:
Farm M: cost of one sheep = $20
Farm Q: cost of set of 5 sheep = $75
Since 10 sheeps are needed, the cost of 10 sheeps from each farm will be:
If she goes with farm Q, the amount of money she will save is:
Cost of 10 sheep from M - Cost of 10 sheep from farm Q =
$200 - $150 = $50
Therefore, she will save $50 if she goes with farm Q.
ANSWER:
$50