For the following questions answer them individually
A boat can travel 42 km in 6 hours while going upstream. If the speed of the stream is 2 km/h, then how much distance will the boat cover in 12 hours while going downstream?
A can do a work in 10 days and B can do the same work in 15 days. If they work on it together for 4 days, then the fraction of the work that is left is:
The average of 11 observations is 10, that of the first 6 being 9 and that of the last 6 being 11. What is the $$6^{th}$$ observation?
If $$A = \frac{1}{2} \div \frac{1}{3} \times \frac{1}{4} + \frac{1}{5} \times \frac{1}{6}$$ and $$B = \frac{1}{6} \div \frac{1}{3} \times \frac{1}{5} + \frac{1}{4} \times \frac{1}{2}$$, then what is the value of (A - B)?
How much amount can a person get on a sum of ₹6,600, if it is invested at 6.2% per annum for a period of 2 years 6 months on simple interest?
P starts from A at 6 a.111. and reaches B after 8 hours. Q stat1s from B at 8 a.m. and reaches A after 9 hours. When they meet, what is the ratio of the distance travelled by Q to the distance travelled by P?
On an 18% discount sale, an article costs ₹6,560. What is the marked price of the article?
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