For the following questions answer them individually
If $$\frac{1}{y- x}, \frac{1}{2y}$$ and $$\frac{1}{y- z}$$ are in Arithmetic Progression, then the relation between x, y and z is given by
Find the simplest value of the expression
$$\frac{1}{10} + \frac{2}{100} + \frac{3}{1000} + \frac{4}{10000}$$
A and B can together do a piece of work in 28 days. If A, B and C can together finish the work in 21 days, how long will C take to do the work by himself?
Twelve men can complete a work in 8 days, Three days after they started the work, 3 more man joined. In how many days will all of them together complete the remaining work ?
A shopkeeper gives 12% additional discount on the discounted price, after giving an initial discount of 20% on the labelled price of the radio. If the final sale price is ₹ 704, then what is its labelled price ?
The marked price of a watch is ₹ 400. After allowing a discount of 25% on the marked price, there was still a loss of ₹ 20. The loss percent is
An amount of ₹ 1,200 is distributed among A, B and C in the ratio of 5 : 7 : 13. What is the difference between the shares of C and B?