Jojo77:

A class of 40 pupils helped to carry bundles of old newspapers in an event organised to collect funds for the old folks. Each boy carried 3 stacks of newspapers and each girl carried 2 stacks. Altogether, the boys carried 30 more stacks than the girls. What is the ratio of the number of boys to the number of girls in the class?

Any one can help using supposition method?

Hello, the answer is 11:9. Please see https://drive.google.com/file/d/0By83v5TWkGjvWEJDYVlrLWRDY3c/view?usp=sharing for the full solution.

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gem:

Hi,

Anyone can help to answer the below question with model? TIA.


Alice, Brenda, and Cathy had 450 beads altogether. Alice gave some of her beads to Brenda and Brenda's number of beads was doubled. Then Brenda gave some of her beads to Cathy and Cathy's number of beads was tripled. As a result, the three girls had an equal number of beads each. How many more beads did Alice have than Cathy at first?

Hello gem, the answer is 225. Please see https://drive.google.com/file/d/0By83v5TWkGjvODRWS1R5YXlUWVk/view?usp=sharing for the full solution.

http://www.EconsPhDTutor.com

Daddy

A total of 360 teachers and pupils participated in tree planting. Each teacher planted 3 trees and each group of 3 pupils planted 2 trees. If 520 trees were planted, how many pupils were there? ( answer: 240)


Not sure how to explain the workings. TIA.

Please see https://drive.google.com/file/d/0By83v5TWkGjvUWhET2VBWnBXRVU/view?usp=sharing for the worked out solution.

http://www.EconsPhDTutor.com

ectanz:

Anyone can help me on the following question? TIA

The masses of four bags of rice A, B, C and D were recorded. 3 bags of rice were weighed at a time.
Bags A, B and C had a total mass of 63kg.
Bags B,C and D had a total mass of 56kg.
Bags A, C and D had a total mass of 69kg.
Bags A, B and D had a total mass of 64kg.
What was the mass of Bag C?

The answer is 20. Please see https://drive.google.com/file/d/0By83v5TWkGjvZE9aaHFtOTlLTmc/view?usp=sharing for the worked out solution.

http://www.EconsPhDTutor.com

whywhy:

Thanks Econphd. My girl cant comprehen your solution. May I know if there are other methods to solve this question?

Sue bought some forks & spoons in the ratio of 5:2. Each spoon cost 80 cents more than a fork. She spent $172 altogether & the amount spent on the forks was $28 more than the amt spent on the spoons.
Find the cost of each spoon.

I'm sorry; I have now greatly simplified my solution. Please take a look at my solution again at the https://drive.google.com/file/d/0By83v5TWkGjvbWhQVE1mSUJpLTA/view?usp=sharing.

I hope this new solution is more helpful.

Clueless Sotong:

Need help with 2 questions:


1) Amy had a total of 408 blue and yellow ribbons. She used 3/5 of her blue ribbons and bought another 32 yellow ribbons. As a result, the number of yellow ribbons she had was 1/4 the number of blue ribbons. How many more blue ribbons than yellow ones did she have at first?

2) Robbie had a total of 80 pieces of $10 notes and $50 notes. He used 1/2 of his $10 notes and withdrew another four pieces of $50 notes from the bank. After which, the number of $50 notes he had was 2/5 the number of $10 notes. Find the total value of the 80 pieces of notes he had at first.

Thanks.

The answers are

Q1. He had 392 more blue ribbons than yellow ribbons initially.
Q2. The total value of the initial 80 notes he had was 70 × $10+10 × 50 = $1,200.

Please see https://drive.google.com/file/d/0By83v5TWkGjvNU42YV9HR3JxT0k/view?usp=sharing for the full worked out solutions.

If you found this helpful, please feel free to tell others about my services.

http://www.econsphdtutor.com/

whywhy:

Please help. Thank you.

Sue bought some forks & spoons in the ratio of 5:2. Each spoon cost 80 cents more than a fork. She spent $172 altogether & the amount spent on the forks was $28 more than the amt spent on the spoons.
Find the cost of each spoon.

The answer is $1.80. Please see https://drive.google.com/file/d/0By83v5TWkGjvbWhQVE1mSUJpLTA/view?usp=sharing for the full worked out solution.

If you found this helpful, please feel free to tell others about my services.

http://www.econsphdtutor.com/

dimitri_can:

For those thinking of staying Airbnb in Tokyo, this maybe an interesting article to read...


http://goo.gl/9kHoXs

Very interesting. If true, that minimum 7-day rule is too bad - bad for home-owners and bad for travellers. Hopefully after they try it out in that one Ota district, they'll scrap it, instead of expanding it.

At least when I was there in 2014, if you had 3 or 4 people, it was always cheaper (and of course much nicer) to do Airbnb than to stay in any hotel (including capsule hotels).

Project Work is NOT going away. What a bizarre rumour to make up.


Further Maths will indeed return in 2017, but this has nothing to do with whether or not PW is going away.

One good thing about Further Maths returning is that it means a reduced workload for those who take it.

Because Further Maths + H2 Maths (or Maths C a decade ago) count as 2 subjects, but really amount to only the workload of perhaps 1.5 subjects.

http://www.EconsPhDTutor.com