Find:
1% of 1 hour

What happens when 95% of copper combine with 4% of tin and 1% of phosphorus?

In a culture, the bacteria count is 1,00,000. The number is increased by 10% in 2 hours. In how many hours will the count reach 2,00,000, if the rate of growth of bacteria is proportional to the number present?

Fill in the blanks- __________ alloy is made up of 95% of copper, 4% of tin, 1% of phosphorus.

In a cer tain college, 4% of boys and 1% of girls are taller than 1.75 metres. Furthermore, 60% of the students in the college are girls. A student is selected at random from the college and is found to be taller than 1.75 metres. Find the probability that the selected student is girl.

A radioactive isotope has a half-life of T years. How long will it take the activity to reduce to - 1% of its original value?

Find the ratio of the following: 30 minutes ot 1.5 hours

A furniture firm manufactues chairs and tables, each requairing the use of three machines A,B and C. Producing of 1 chair requires 2 hours of machine A, 1hour on machine B and 1 hour on machine C. Each table requires 1 hour each on machine A and B and 3 hours on machine C. The profit realised by selling 1 chair is Rs 30 while for a table is Rs 60. The total time available per week on machine A is 70 hours , on machine B is 40 hours and on machine C is 90 hours. Find the mathematical formulation so as to find the number of chairs and tables that should be made per week soto maximizethe profit.

A car covers a distance of 89.1 km in 2.2 hours. What is the average distance covered by it in 1 hour?