For the following questions answer them individually
Last year, 5 companies had an average of 16 non working days each. This year 3 companies had 10 more non working days each, and 2 companies had 5 fewer non working days each. What was the average number of non working days given by the same companies this year ?
8 litres of water is added to 32 litres of a solution containing 20% of alcohol in water. What is the approximate concentration of alcohol in the solution now ?
Rama mixes 20% of kerosene to his petrol and then he sells the whole mixture at the price of petrol. If the cost price of the kerosene is 40% of the CP of petrol. What is the net profit %?
Which of the following fractions does not lie between $$\frac{5}{6}$$ and $$\frac{8}{15}$$ ?
A balance of a trader weighs 20% less than it should be. Still the trader mark-up his goods to get the overall profit of 35%. What is mark-up on the cost price ?
If $$\sin\theta=a\cos\phi $$ and $$\cos\theta=b\sin\phi$$, then the value of $$(a^{2}-1)\cot^{2}\phi+(1-b^{2})\cot^{2}\theta$$ is equal to:
What is $$\frac{(x^{2}-y^{2})^{3}+(y^{2}-z^{2})^{3}+(z^{2}-x^{2})^{3}}{(x-y)^{3}+(y-z)^{3}+(z-x)^{3}}$$
The difference between C I and S I for 2 years at 10% rate of interest is Rs. 4. Find the sum of money.
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