Posted by **sheila** on Sunday, November 3, 2013 at 8:36pm.

if each guest eats 2/3 of a small pizza, how may guests would eat 12 small pizzas.

- math -
**Steve**, Sunday, November 3, 2013 at 8:42pm
12/(2/3) = 12 * 3/2 = 18

It takes 3 guests to eat 2 pizzas

So, since 12 = 6*2, it takes 6*3 = 18 guests

- math -
**sheila**, Sunday, November 3, 2013 at 8:49pm
Why did you reverse fraction to multiply?

- math -
**Steve**, Sunday, November 3, 2013 at 11:43pm
that is the way you divide by fractions.

you know that 2/4 is the same as 1/2, since there are two 4ths in a half.

(1/2) / (1/4) = 1/2 * 4/1 = 4/2 = 2

dividing by a number is the same as multiplying by its reciprocal, just as subtracting a number is the same as adding its negative.

multiplication and division are inverse operations, as are addition and subtraction.

dividing by 10 is the same as multiplying by 1/10.

dividing by 1/3 is the same as multiplying by 3, since each "one" has three "1/3"s in it, so there are three times as many thirds as there are wholes.

## Answer This Question

## Related Questions

- Math - Linda buys 3 pizzas for her party. There are 8 guests at the party. If ...
- math - six friends share 5 small pizzas. each friend first eats half a pizza. ...
- Math - six friends share 5 small pizzas. Each friend first eats half of a pizza...
- math - A caterer prepares three times as many pizzas as she usually prepares for...
- Math 6th grade - At lunch 3 1/4 small pizzas were equally devided into 4 people ...
- Math - YoU order 6 pizza & you eat 2/3 of one pizza before your guest arrived. ...
- math - The pizza restuarant has a special off today: 3 pizzas for $25. The ...
- Fractions - how many pizzas are required if mario eats 1/3 of a pizza, Luigi ...
- Algebra - The Pi (π) Club at Math High School was planning a fundraiser to ...
- Math - A caterer prepares four times as many pizzas as she usually prepares for ...

More Related Questions