Answer:
Explanation:
15:21 = x:420 (students that want da spaghetti:overall students)
cross multiply
15 x
21 420
6300=21x
divide by 21 on both sides
300=x
300 students out of the 420 prefer da spaghetti
300 can be expected to prefer spaghetti over meatloaf.
4.7m questions
6.1m answers