A chef planning for a large banquet thinks that 2 out of every 5 dinner guest will order his soup appetizer he expects 800 guest at the banquet use equivalent ratios to estimate how nmany cups of soap he should prepare

320 cups of soup

Step-by-step explanation:

2/5= x/800

2/5 =.04  

800*.04 =320       x=320

2/5 = 320/800

2/5 =0.4  is equivalent to 320/800=0.4

three-fourths of an hour

36÷48=0.75

0.75=

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8