SmartCookiezZ

Guests answer seems reasonable and they had a good way to approach it! (I was trying for ages lol)

Ok my answer for b was wrong and I have to admit it was a very silly mistake on my part. I answered 42 which would have been correct if they asked how many she bought with 1/3 of her remaining money but I forgot to add the amount she bought at the start if I had I would have gotten 50, Sorry again for the incorrect answer and I hope this is the correct answer.

SCZ

Hey Guest! 

Thank you for asking me specifically but as sparkling water said, you don't need to ask for a certain person. 

I'm not quite sure how to approach this problem but this is my best attempt: so each cupcake costs twice as much as a sardine pie, therefore c=2s (c represents cupcake and s represents sardine pie) so the cost of 2 cupcakes and 8 sardine pies is the same as the cost of 12 sardine pies. She then spent 3/4 of her remaining money which is 3/4 of the 4/7 left. This amount is the same as 1/7 of the original amount. The question says that pandan cakes cost 4.50 more than cupcakes but gives no clue as to the other prices. This leaves me at a dead end. You could instead change to amount of sardine pies into cupcakes so the cost of 2 cupcakes and 8 sardine pies is the same as the cost of 6 cupcakes but this still doesn't help us. 

Could someone else try this question? I am new to this website and I do not have a great knowledge of maths so someone else here might be able to help.

SCZ

Hey Guest!

This my attempt at (b) ok so in a we found that 1/10 of her money could buy 14 erasers, its says with 1/3 of her remaining money she bought more erasers after spending 1/10 she had 9/10 left. 1/3 of 9/10 is 3/10 presuming she spent that 1/3 on just erasers with no change then

1/10=14

3/10=14×3

=42

I hope I helped

SCZ

Hi Guest! Think of it as an algebra sum but instead of x and y we have pencils (p) and erasers (e) and p=2e (pencils cost double the amount of an eraser) so 

1/10 of her money=8e+3p since p=2e

=8e+3(2e)

=8e+6e

=14e 

So the answer to (a) is 14

SCZ

Hey guest I answered this question here https://web2.0calc.com/questions/help-plz_94058

SCZ

Hey Ticon! So if Jim has 123 multiply it by 2 to get the amount Andrew has 123×2=246 then multiply by 3 to get the amount Robert has 246×3=738 add all the numbers together to get 123+246+738=1107

I hope I helped!

SCZ

Hi guest! I have thought about this question for a bit and since it's says in the first ratio that ad=5 but then it says in the second one that ad=3 it has to be something divisible by 3 AND 5, it says to find the smallest perimeter so ad has to be the lcm of 3 and 5 which is 15, in the first ratio 15 is divided by 3 to get 5 therefore ab has also been divided by 3 so ab=6, applying the same logic to the other ratios 15 was divided by 5 to get 3 therefore cd was also divided 5. If ad=ab then we get

ab=6

bc=15

cd=20

ad=15

Add these together to get 56.

Could someone check this? Idk if I have explained it well

SCZ

Hey Guest! So an easy way to simplify this question is: how many ways can you split 5 in two? Please tell me if this is incorrect but my thinking is that you can put 4 balls in one box and 1 in the other. In a similar way you can put 2 in one box and 3 in the other. When done in this way you should get 2. But you can also swap them since they are distinguishable so when you reverse then previous pairs you also get 2. So 2+2=4 . I believe the answer is 4 but I could be wrong.