In January, out of the total number of bottles manufactured, 60% were sold and the rest of them were unsold. If the ratio of the number of plastic bottles sold to unsold is 8:5, then find the difference between the number of steel bottles sold and unsold.

The ratio of the number of plastic bottles sold in March and April together to the number of steel bottles sold in June is z:7. If the number of steel bottles sold in June is 1/8 less than that in March, and the number of plastic bottles sold in June is 120z, then find the total number of (plastic + steel) bottles sold in June.

The number of wooden bottles sold in May is 12.5% more that of steel bottles sold and the average number of wooden bottles sold in January, February and May is 2410. If the number of wooden bottles sold in January is 200 more than that in February, then find the number of wooden bottles sold in January.

Find the sum of the number of plastic bottles sold in May and the difference between the number of steel bottles sold in February and March.

The total number of bottles sold in January is what percentage more than the number of steel bottles sold in April?

Priya bought an article and sold it at a profit of 20%. Had she bought it for Rs. 220 less and sold it for Rs. 648 more, she would have earned a profit of 60%. Find the difference between the original selling price and the original cost price of the article.

616 litres of mixture contains milk and water in the ratio 11:3. If (x + 16) litres of milk and 168 litres of water is added in the mixture, then the quantity of milk becomes 70%. Find the value of x.

The length and breadth of the rectangle is (y + 10) cm and (y - 5) cm respectively and the perimeter of the rectangle is 130 cm. If the radius of the cylinder is 12 cm less than the length of the rectangle and the height of the cylinder is 1/5th of the breadth of the rectangle, then find the volume of the cylinder.

The average number of shirts in bags A and B together is 40 and the ratio of the number of shirts in bag A to B is 5:3. If 80% and 60% of the shirts in bag B and bag A, respectively, are black shirts, then find the sum of the probability of selecting a brown shirt from bags A and B. (Only two-colored shirts are in both bags: black and brown)

A can complete the work alone in 21 days, which is 25% less than the time taken by B alone to complete the work. The time taken by C to destroy the work is 7 days more than the time by B to complete the work. Find the approximate time taken by all three working together to complete the work.