Algebra II
posted by Joe .
If y varies jointly as w and x, and y is 483 when x is 742 and w is 383, find y when x is 274 and w is 756.

y = kwx
First, find k. Do this by plugging in x,w,y:
483 = k*742*383 so
k = 0.0016995
Now, knowing k, find y:
y = 0.0016995 * 274 * 756
y = 352