Question

Joy makes 6.5 litres of soup correct to the nearest 0.5 litre. She serves the soup in 280 ml portions, correct to the nearest 10 ml. 22 people order this soup. Does Joy definitely have enough soup to serve 22 people?

Answer 1

Joy makes 6.5 litres of soup correct to the nearest 0.5 litre. So, nearest figure is 7

She serves the soup in 280 ml portions, correct to the nearest 10 ml. As the last digit is zero, this will not be rounded off and will remain 280

Number of people who order soup = 22

So per person 280 ml is served, for 22 people

$280\times22=6160$ ml

Now converting this value in liter,

1 ml = 0.001 liter

6160 ml = 6.16 liter

Hence, Joy definitely has enough soup to serve 22 people.

Answer 2

Answer:

Joy definitely does have enough soup for 22 people.

Step-by-step explanation:

Upper Bound: 285ml  turn it to 0.285 L                      10÷2=5

280ml

Lower Bound: 275ml turn it  to 0.275 L

Upper Bound: 6.75 L                           0.5÷2=0.25

6.5 Litters

Lower Bound:6.25  L

6.75÷0.275=24.54 or 25  

6.25÷0.285=21.92 or 22

22≤x<25 Joy definitely does have enough soup for 22 people.