Any Math-Heads on the Coli? Stuck on a question...

[Raw Lyrics]

If so, you mind seeing if you can solve this:

Amy had homework for math, science, and history. She spent 1/3 of her time working on math and 1/4 of her time working on science.

Part A

Amy estimated that she spent 1/7 of her time on both math and science homework. Without doing any calculations, determine whether or not Amy's estimate is accurate and explain why or why not.


Part B

How much of her time did Amy spend working on history?




I appreciate any help I can get on this....

 

[EducatedBrothaFromTheBank]

45 Minutes

 

[Raw Lyrics]

45 Minutes

?

 

[no.]

NOPE. Amy's estimate is incorrect.

Because 1/7 is a lower value than 1/4.

You can't add 1/4 to 1/3 and expect the value to be 1/7

 

[Raw Lyrics]

NOPE. Amy's estimate is incorrect.

Because 1/7 is a lower value than 1/4.

You can't add 1/4 to 1/3 and expect the value to be 1/7

I got that...thanks.

But what about Part B?

 

[Ohene]

5/12 spent on history. op...how old are you? 13?

1/3 = 4/12
1/4 = 3/12

those twocombined = 7/12

12/12 - 7/12 = 5/12

 

[How Sway?]

7/12 for a

 

[Rufus Dufus]

Part B is 5/12

 

[Raw Lyrics]

5/12 spent on history. op...how old are you? 13?

I figured that.... cause it's 7/12 spent on the other two....thank you so much. My little bro is arguing with me and I wanted to prove him wrong from an objective source.

 

[Hope]

Not sure if i did this right ...
a)
Her estimation is wrong because it's said that she spent over half her time (1/4=25 percent, 1/3=33 percent, that's over 50 percent) on those two subjects, and 1/7 is a lot smaller that 1/2 (50 percent) .

b)
Common denominator with 1/3 and 1/4 is 12.
4/12 + 3/12 +x/12 = 12/12

x/12=5/12

She spent 5/12 of her time on History.

 

[Donald J Trump]

convert it to decimals breh, it makes it easier for you

 

[Ohene]

I figured that.... cause it's 7/12 spent on the other two....thank you so much. My little bro is arguing with me and I wanted to prove him wrong from an objective source.

lol i see

 

[BLAZO da GAWD]

OP, is this the college you attend?

 

[Raw Lyrics]

OP, is this the college you attend?

 

[Anti-Anime]

OP, is this the college you attend?

We got the ether coming in so quick these days.