exam Maths Puzzle Numerical Ability

What is the common point on the graphs of y=(3/4)^x and y=(4/3)^x?

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exam Other Question

IF LEAH ID 6 YEARS OLD THAN HER SISTER, SUE, ADN JOHN IS 5 YEARS OLDER THAN LEAH, AND THE TOTAL OF THEIR AGES IS 42. THEN HOW OLD IS SUE? 6x+2 for x=3