In a week, the Robinson family drink 9/2 bottles of orange juiced the Chan family drink 3 and 4/5 bottles. How much more bottles of orange juice do the Robinson family drink then the Chan family?

9/2 - 3 4/5

= 9/2 - 19/5
= 45/10 - 38/10
= 7/10

9/2 = 4 1/2 = 4.5

Subtract.

I don't understand??

okay thanks

To find out how much more bottles of orange juice the Robinson family drinks compared to the Chan family, we need to subtract the number of bottles of orange juice consumed by the Chan family from the number consumed by the Robinson family.

Given that the Robinson family drinks 9/2 bottles of orange juice in a week and the Chan family drinks 3 and 4/5 bottles, we can rewrite the fractions to have a common denominator. The common denominator for 2 and 5 is 10.

So, the Robinson family drinks (9/2) * (5/5) = 45/10 bottles of orange juice.

And the Chan family drinks (3 and 4/5) * (10/10) = 34/10 bottles of orange juice.

Now, subtracting the number of bottles consumed by the Chan family from the Robinson family, we have:

(45/10) - (34/10) = 11/10

Therefore, the Robinson family drinks 11/10 (or 1 and 1/10) more bottles of orange juice than the Chan family.