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anonymous
 one year ago
How do you do 1.5/2.5 of 15?
anonymous
 one year ago
How do you do 1.5/2.5 of 15?

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phi
 one year ago
Best ResponseYou've already chosen the best response.1"of" means multiply \[ \frac{1.5}{2.5} \cdot 15 \] to get rid of the decimals, you can multiply top and bottom by 10 \[ \frac{15}{25} \cdot 15 \] can you finish?

phi
 one year ago
Best ResponseYou've already chosen the best response.1I would first simplify the fraction by dividing top and bottom by 5 what do you get ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0like what is 1.5/2.5 of 15

phi
 one year ago
Best ResponseYou've already chosen the best response.1reread my post more carefully.

phi
 one year ago
Best ResponseYou've already chosen the best response.1do you know how to simplify 15/25 by dividing the top number by 5 and the bottom number by 5?

phi
 one year ago
Best ResponseYou've already chosen the best response.1yes, that means the problem is \[ \frac{3}{5} \cdot 15 \] notice you can simplify more by dividing the bottom by 5 and the 15 (which is up top) by 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The end answer is 9 but how do I get it?

phi
 one year ago
Best ResponseYou've already chosen the best response.1when you multiply fractions you multiply top times top and bottom times bottom if you have a whole number like 15, write it as 15/1 so it has a "bottom" but it is better to first simply first. you have \[ \frac{ 3}{5} \cdot \frac{15}{1} \\ \frac{3 \cdot 15}{5\cdot 1}\] I would not multiply 5*15 up top right away instead, divide the bottom by 5 and the top by 5 to get smaller numbers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But im not multiplying

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Im trying to find out what is 1.5/2.5 out of 15

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and how to work it out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but how do I get it?

phi
 one year ago
Best ResponseYou've already chosen the best response.1English is confusing when describing math (which is why equations are easier to understand .. once you learn how) but you can get the idea this way: what is 1/2 of 2 ? notice the answer is 1. and 1/2 * 2 is also 1 It turns out the "of" means multiply

phi
 one year ago
Best ResponseYou've already chosen the best response.1so try to simplify \[ \frac{3 \cdot 15}{5\cdot 1} \] by dividing top and bottom by 5

phi
 one year ago
Best ResponseYou've already chosen the best response.1in the bottom you have a 5. divide by 5 you get 1 up top you have a 15 what is 15/5 ?

phi
 one year ago
Best ResponseYou've already chosen the best response.1Once you learn the idea you will be able to do these problems

phi
 one year ago
Best ResponseYou've already chosen the best response.1what we did was simplify \[ \frac{3 \cdot 15}{5\cdot 1} = \frac{3 \cdot 3}{1\cdot 1} \] now you can do the multiply and divide and get a simple number.

phi
 one year ago
Best ResponseYou've already chosen the best response.1you could have done \[ \frac{3 \cdot 15}{5\cdot 1} = \frac{45}{5} \] and simplify to get 9 but it's easier for me to divide the 5 into the 15 right away

phi
 one year ago
Best ResponseYou've already chosen the best response.1if you have \[ \frac{15}{5} \] you can divide the top by 5 and the bottom by 5 to get \[ \frac{3}{1} \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thats easier for me. Thank you

phi
 one year ago
Best ResponseYou've already chosen the best response.1maybe. but notice if you had \[ \frac{256}{32} \] and no calculator. It should be clear you can divide top and bottom by 2 so you could simplify the problem to \[ \frac{128}{16} \] and then divide top and bottom by 2 again \[ \frac{64}{8} \] and now you might notice 64/8 is 8

phi
 one year ago
Best ResponseYou've already chosen the best response.1but if you did not notice 64/8 is 8 you could simplify by dividing top and bottom by 2 to get 32/4 and then 16/2 and then 8/1 or just 8
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