Five bells begin to ring together at intervals of 8 sec, 6, sec, 4 sec, 12 sec and 10 sec respectively. How many times will they ring together in the duration of one hour (excluding the ring at the start) ?

The ratio of the present ages of Ram and Shyam is 4 : 3. The ratio of their ages after 9 years will be 7 : 6 . What will be the ratio of their ages after 12 years ?

In an exam it is required to get 3 5 % of the aggregate marks to pass. A student gets 320 marks and is declared failed by 30 marks. What is the total marks ?

A plot of 650 sq ft is available at the rate of Rs 6500 per sq ft. If 1 3% of the total cost of the plot is to be paid for booking the plot, what is the booking amount, (in Rs) ?