Wednesday

July 23, 2014

July 23, 2014

Posted by **Unknown.** on Thursday, October 28, 2010 at 4:55am.

- Math. -
**Ivan**, Thursday, October 28, 2010 at 6:29am420cal = 2.25 cans

? cal = 1can

To find the number of calories we just do the cross product, so:

420cal x 1can / 2.25cans = ? cal

420cal/2.25cans = 186.6667cal

- Math. -
**jai**, Thursday, October 28, 2010 at 8:23amyou have to divide 420 by 2 1/4,, to do this, you must first convert 2 1/4 into improper fraction:

2 1/4 = 9/4

*note that to convert mixed number into improper fraction, multiply the denominator (which is 4) by the whole number (which is 2), then add the numerator (which is 1), thus 4*2 + 1 = 9, but the denominator is still 4, thus it's 9/4,,

then divide:

420 / (9/4)

*to do this, get the reciprocal of 9/4, that is, interchange numerator and denominator:

9/4 --> reciprocal is 4/9

now, the operation becomes multiplication instead of division:

420 * (4/9) = ?

you simplify this.

so there,, :)

- Math. -
**Unknown.**, Thursday, October 28, 2010 at 6:30pmThank you Ivan and Jai.

**Related Questions**

geometry - In exercises 31-34, a cooler at a picnic contains 100 cans of soda ...

4 grade math - the estimate the number of cans of soda thet drink each week? ...

English - e.g. I have a soda to recommend. ( What is 'soda'? Are both Coke and ...

Microeconomics: Budjet Constraint - You have decided to eat sushi for lunch and ...

math - At Thanksgiving dinner, Deborah ate a portion of turkey (673 calories;...

Physics - A con of soda displaces 3.79 * 10^-4 m^3 of water when completely ...

SCIENCE - 1. what 2 elements are soda cans made of? 2. what materials were used ...

SCIENCE - 1. what elements are soda cans made of? 2. what materials were used in...

Health - Empty calories are defined as ________. A. Calories from dairy products...

Hea;th - Empty calories are defined as ________. A. Calories from dairy products...