Sylvia bought 8 tickets to a concert. Each ticket costs $18. To find the total cost in dollars, she added the product 8×10 to the product 8×8, for a total of 144. Which property did Sylvia use?
Sylvia wanted to find the total cost in easier way. 8 x 10 + 8 x 8 = 80 + 64 = 144 She used the Distributive property: a x ( b + c ) = a x b + a x c 8 x 18 = 8 x ( 10 + 8 ) = 8 x 10 + 8 x 8 = 80 + 64 = 144 Answer: Distributive property.