Search found 6 matches
mathematics
A student plans to spend $200.00 on p notebooks. But the price of the notebooks had increased by $10.00. As a result, the number of notebooks the student could buy was reduced by 1. Find the price of each notebook before the increase.
- by Diophantus
Sat Oct 07, 2017 8:33 am- Forum: Problem Solving
- Topic: mathematics
- Replies: 1
- Views: 731
mathematics
How many numbers greater than 2000 can be formed using the digits 1,3,4,5,6?
How many of these will be even? (no repetitions allowed.)
- by Diophantus
Tue Oct 03, 2017 11:19 pm- Forum: Problem Solving
- Topic: mathematics
- Replies: 0
- Views: 605
mathematics
In a right-angled triangle, the hypotenuse is 39cm and the ratio of the other two sides is 12:5. Find the sides
- by Diophantus
Sun Oct 01, 2017 4:44 am- Forum: Problem Solving
- Topic: mathematics
- Replies: 2
- Views: 1067
- by Diophantus
Sun Sep 24, 2017 5:32 pm- Forum: Problem Solving
- Topic: mathematics
- Replies: 2
- Views: 859
mathematics
Three bags labelled P, Q and R contains red, blue and white balls respectively of equal sizes. The ratio of the balls are P:Q=2:3 and Q:R=4:5. All the balls are removed into a big bag and properly mixed together. 1.Find the probability of picking a red ball 2. If two balls are picked at random one a...
- by Diophantus
Tue Sep 19, 2017 10:51 pm- Forum: Problem Solving
- Topic: mathematics
- Replies: 1
- Views: 1879
Mathematics
Three sets of beans x, y and z are sold for $5.00, $15.00 and $17.50 respectively per kg. If they are mixed in the ratio 1:3:2, what is the cost per kg of the mixture?
- by Diophantus
Tue Aug 22, 2017 8:54 am- Forum: Problem Solving
- Topic: Mathematics
- Replies: 5
- Views: 1415