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This problem trains for: SAT-I, GMAT, Math Kangaroo 5-6, Math Kangaroo 7-8.
If x is 63% of y and z is 87% of x, approximately how much percent of z is y?
The problem states that:
Solving for x in the first equality:
Solving for y in the second equality:
Eliminate x between the two to get a relation between y and z:
Find the unknown percentage p: