For the following questions answer them individually
A dealer professes to sell his goods at cost price, but uses 900 gm weight for a kilogram. Find his profit per cent.
The average marks scored by a student in 4 subjects is 75. But when the marks of English are added to it, the overall average became 70. How much did he score in English?
The total surface area of a solid hemisphere is 16632 $$cm^{2}$$. Its volume is: (Take $$\pi=\frac{22}{7}$$)
The price of an article is raised by 45% and then two successive discounts of 15% each are allowed. Ultimately the price of the article is _________.
What is the volume of the largest right circular cone that can be cut out from a cube whose edge is 10 cm?
The difference between the compound interest and the simple interest on a given principal is ₹1,725 in 2 years and the rate of interest in both cases is 25% per annum, and in the case when interest is compunded, it is compounded annually. Find the principal.
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