Answer:
6 onion rings and 3 sliders
Step-by-step explanation:
x+y=1020
x=sliders calories
y=onion rings calories
x= y divided by 2
y= x multiplied by 2
sliders=200 calories
onion rings= 70 calories
3 sliders= 600 calories
6 onion rings=420 calories
if we add these together then we get 1020