For the following questions answer them individually
If a : b : c = 3 :2 :4 and b : d = 2:3, then find the value of $$(\frac{a+c+d}{c-d})^{3}$$
Sai can do a piece of work alone in 50 days. Ria is 25% more efficient than Sai. What is the number of days that Ria will take to do the same piece of work alone?
If the cost price of an item is ₹2,000 and it is sold at a loss of 25%, then find its selling price.
The sum of the radius and the diameter of a solid sphere is 63 cm. What will be the volume of this sphere? [Use $$\pi = \frac{22}{7}$$]
A person marks the price of his car 50% above the cost price. He gives a discount of B% and earns a profit of 10%. What is the approximate value of B?
The difference between the average of P and Q and the average of Q and R is 25. What will be the difference between P and R?
Robert bought an old bicycle for ₹1,250 and spent ₹250 on its repair. He sold it for ₹1,470. What is his loss percentage?
What is the simple interest on a principal of ₹16,000 for 3 years at the rate of 10% per annum?
What is the compound interest on ₹80,000 for 1 year at 10 per cent per annum, compounded half yearly?
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