Solve this if you can.​

25 is your answer.

let drinks be x,burger be y and chopsticks be z

for 1st

x+x+x=30

3x=30

x=30/3=10

for 2 nd

x+y+y=20

2y=20-10

y=10/2=5

y=5

for 3rd

y +z+z=9

2z=9-5

z=4/2=2

for last one

y+z×x=5+2×10×2/2=25