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.
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
I hope I helped
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
Add these together to get 56.
Could someone check this? Idk if I have explained it well
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.