Gina visited the aquarium with some of her cousins, aunts and uncles. The group bought 20 admission tickets for $340. Adult tickets cost $20 and children's tickets cost $15. How many adult and children tickets did the group buy?

let x number of adults and y number of children visited aquarium

hence x +y = 20 ------------(1)

20x+15y =340 --------------( 2)

multiplying 15 in equation 1 we get 15 x +15y =300 -----------(1A)

subtracting Eq 1A with eq 2 we get

5x =40 or x =40/8 =5

hence y = 20-5 =15

Answer : Adults 5 & Children = 15

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