SAT Math Multiple Choice Practice Question 596: Answer and Explanation
In the equation above, if a and b are positive integers and is in its simplest reduced form, what is the value of a?
Correct Answer: B
B The lowest number that both 8 and 10 are factors of is 40. Convert the fractions to a denominator of 40: . There is no factor that 9 and 40 have in common, so the fraction cannot be reduced. The number in place of a in is 9. Be careful! E has the value of b.