I need help for below question.


"Twice a number is greater than half that number by 24. Find the number.

I need help on this question.

I need help on this question.

Anyone has result of St. Nicholas Girls

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Do you have any school O level paper for my daughter?

Subjects require:
1. E & A maths
2. Physics
3. Chemistry

Thanks
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Another question please


Car A left the east village for the west village at the same time when Car B left the west village for the east village. 9 hours later, the two cars passed each other. Another 7 hours later, car A reached the west village but Car B was still 130km away from the east village. Find the distance between the two villages.

Please help on below. Thanks


John takes 40 min and Peter takes 30min to travel from Point X to Point Y.
A) What is the ratio of John’s average speed to Peter’s average speed?
B) If John starts traveling 5 min earlier than Peter, how long will Peter take to catch up with John.

Thank you Tianzhu.

Please help on below


There are 200 red balls and 90 blue balls in basket A. There are 80 red balls and 100 blue balls in basket B. Find the total number of balls that must be transferred from basket B to basket A so that 60% of the balls in basket A and 50% of the balls in basket B are red balls.

Thank you very much for your help. Tianzhu.





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mvmir26:

Anyone can help me with below questions:-
Mr Tan had a total of 350 ducks and chickens in his farm. After selling some ducks and chickens he had 100 of them left. The ratio of the number of chickens sold to the number of chickens left was 4:1. The number of ducks sold to the number of ducks left was 3:2. How many chickens were sold by Mr Tan?

Hi

This is a question on simultaneous concepts.

If a student is familiar with simultaneous equations, he/she may use it.

If not,solve it using the ‘Alphabet Method” or solve the equations pictorially.

Let’s begin using the “Alphabet Method”

Number of chickens sold ------ 4C
Number of chickens left ------ 1C

Number of ducks sold ------ 3D
Number of ducks left ------2D

5C + 5D ------350
1C + 1D ------70

1C + 2D ------ 100
1D -------30
1C ------40

Number of chicken sold --------4*40 ------160

Best wishes[/quote]