Problema Solution
Suppose that w is direclty proportional to y and inversely proportional to v. If w=12 when v=20 and y=10, find w when v=30 and y=5.
Answer provided by our tutors
w is directly proportional to y and inversely proportional to v
w = k*(y/v), where k is a constant
w = 12 when v = 20 and y = 10 thus
12= k*(10/20)
by solving we find
k = 24
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when v = 30 and y = 5 we have
w = 24*(5/30)
w = 4