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The EL papers are over now. Mathematics coming up tomorrow. All the best if you are sitting for the test.

Solution to yesterday’s question is ready. Check it out.

Published in: on Wednesday, October 3, 2007 at 9:06 pm  Comments (3)  
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1 more day

Solution to yesterday’s problem is here.

So this is it. One more day to the real exams. And one more problem to solve.

Sam bought 3 times as many toy soldiers as dolls. He spent $1972 altogether. A doll cost $10 more than a toy soldier. The total cost of toy soldiers was $476 more than the total cost of dolls. Find the cost of a doll.

Published in: on Tuesday, October 2, 2007 at 11:22 pm  Comments (2)  
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2 more days

Solution to yesterday’s problem:

P5 & P6 is 25
P4 & P5 is 16
P4 & P6 is 15

Therefore,

Total number of entries is (25 + 16 + 15)/2 = 28

Room for another problem?

Clement and Victor were out for a cycling trip. Clement ran into a tree, damaging his bicycle. They were 16 km from home. They decided that Clement would walk first and Victor would cycle. After sometime, Victor would leave his bicycle on the road and continue walking home, so that Clement would reach the bicycle and continue to cycle home. Clement walked at 4km/h and cycled at 10 km/h, while Victor walked at 5 km/h and cycled at 12 km/h. For what length of time should Victor cycle if they were both to arrive home at the same time?

Published in: on Monday, October 1, 2007 at 10:33 pm  Comments (2)  
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3 more days

Solutions to yesterday’s question can be downloaded here.

Today’s question:

In a writing competition, there were 25 entries from Primary Five and Primary Six. The rest were from Primary Four. If 16 entries were not from Primary Six and 15 entries were not from Primary Five, how many entries were there altogether?

Published in: on Sunday, September 30, 2007 at 11:27 pm  Comments (3)  
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4 more days

This is one Mathematics question for my pupils to attempt before the start of PSLE. If you are not my pupil, please feel free to solve the question too. Post your solutions in the comment space if you wish to. Solutions will be posted tomorrow. Have fun! 🙂

There are 600 children in Group A and 30% of them are boys.
There are 400 children in Group B and 60% of them are boys.
After some children are transferred from Group B to Group A, 40% of the children in Group A and 60% of the children in Group B are boys.
How many children are transferred from Group B to Group A?

Published in: on Saturday, September 29, 2007 at 3:28 pm  Comments (6)  
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