I need some help....

S

Simret01

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Joined
Jun 14, 2022
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Hi!
So i was wondering if someone could help me understand the answer and method for this question, its one me and my friends have been puzzling over for a while!
P.s sorry if i put this in the wrong section, i just thought this was the simplest.
Thanks! Here's the question.....
2 people are eating a pizza. Jack eats 1/6 of the pizza and Jess eats 3/5 of the remaining pizza. How much of the original pizza is left?
I know it seems easy, but seriously its stumped my class for a while, it was on our end-of-year.
Thank you!
Simret01
 
Simret01 said:
Hi!
So i was wondering if someone could help me understand the answer and method for this question, its one me and my friends have been puzzling over for a while!
P.s sorry if i put this in the wrong section, i just thought this was the simplest.
Thanks! Here's the question.....
2 people are eating a pizza. Jack eats 1/6 of the pizza and Jess eats 3/5 of the remaining pizza. How much of the original pizza is left?
I know it seems easy, but seriously its stumped my class for a while, it was on our end-of-year.
Thank you!
Simret01
Click to expand...
After Jack woofed down 1/6 of the total pizza,

What fraction of the total pizza was left?

What fraction of the total pizza was eaten by Jess?
 
Imagine the pizza was cut into 6 equal pieces (slices)
If Jack ate 1/6 of the pie, then how many slices are left?
Now jess eats 3/5 of what is left. How many slices did Jess eat? How many slices are left?
What much of the original pair is left?
 
Harry_the_cat said:
Show us what you have tried first.
Click to expand...
OK so first I changed both to the same denominator
1/6 to 5/30 and 3/5 to 18/30
So once Jack ate 5/30 there was 25/30 left and Jess ate 18/30 from the 25/30 that was left. So you get 7/30 right?
Is that correct?
 
Simret01 said:
OK so first I changed both to the same denominator
1/6 to 5/30 and 3/5 to 18/30
So once Jack ate 5/30 there was 25/30 left and Jess ate 18/30 from the 25/30 that was left. So you get 7/30 right?
Is that correct?
Click to expand...
No it is NOT.
Simret01 said:
OK so first I changed both to the same denominator
1/6 to 5/30 and 3/5 to 18/30
Click to expand...
Correct arithmetic - but no need to do it!

Subhotosh Khan said:
After Jack wolfed down 1/6 of the total pizza, what fraction of the total pizza was left?
Click to expand...
1 - 1/6 = 5/6
Simret01 said:
Jess eats 3/5 of the remaining pizza
Click to expand...
3/5 of 5/6 = 3/5 * 5/6 = 1/2

fraction of Pizza eaten → 1/6 + 1/2 = 4/6 = 2/3

Simret01 said:
How much of the original pizza is left?
Click to expand...

fraction of Pizza left → 1 - 2/3 = 1/3
 
Oooooohhhhh I get it now
Thank you so much this was a lot of help!

I get where I made the mistake which was dumb of me to forget how I originally did it. See I originally got 1/3 in the exam but everyone else apparently got 7/30 so when I wrote out my working here, I forgot what I did ?
Thanks though now I can rub it into their faces that I was right....
Joking!
Thank you!
Simret01
 
Imagine the pizza was cut into 6 equal pieces (slices)
If Jack ate 1/6 of the pie, then how many slices are left? 5 slices are left
Now jess eats 3/5 of what is left. How many slices did Jess eat? Jess ate 3 slices. How many slices are left? 2 slices are left
What much of the original pair is left? 2/6 = 1/3
 
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