a total of 90 tickets were sold for £600. if adult tickets cost £8 and childrens tickets cost £3. how many tickets of each kind were sold?

Question

MY MATHS TEST U

DB

JD

D

DK

DIU

HDIU

GCIU

Answer 1

A + C = 90

multiply by 3, then subtract from equation below to eliminate one variable

8A + 3C = 600

3A + 3C = 3(90) =270

5A = 600-270 = 330

A =330/5 = 66 adult tickets sold

C =90-66 =24 child tickets sold

8(66) + 3(24) = 528 + 72 = 600