exam
Maths Puzzle
Numerical Ability
3/y = ?/ky
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exam Other Question
Tony worked 9/10 of an hour on a project. That is three times as long as Bill worked. How many hours did they work in all?
Diameter AB of circle O is 21 inches. Line AB is extended through B to a point C, and tangent Line CD is drawn, meeting the circle at D. CD is 6 inches longer than BC.
a) Let x represent BC. Express CD and CA in terms of x
b) Find BC