For the following questions answer them individually
The line chart given below shows the number of calculators sold by two shopkeepers L and M in 5 months.
J1 = The value of average number of calculators sold by L in all the months.
J2 = The difference between the total number of calculators sold by L and M.
What is the value of (J2/J1)?
On selling of 18 pens at Rs.360, there is a loss equal to the cost of 3 pens. What is the cost price of a pen?
Two circles of radius of 21 cm each intersect each other such that each passes through the centre of the other. What is the length of the common chord?
Speed of a train is 30 percent more than the speed of a car. Both start from point P at the same time and reach point Q at the same time. P and Q are 130 km apart from each other. On the way train stops for 30 minutes at a station. What is the speed of the train?
P invested Rs.4000 for one year. Q joined him with an investment of Rs.6000 after few months. If at the end of one year the ratio of profits of P and Q is 4 : 3. Then Q joined after how many months?
A person lent Rs. 12,000 to B for 3 years and Rs. 10,000 to C for 4 years on simple interest at the same rate of interest and received Rs.6.080 in all from both of them as interest. What is the annual rate of interest?