For the following questions answer them individually
What is the mean proportional between the fourth proportionals of (1 , 2, 7) and (14, 16, 2401 )?
X can do half and Y can do one-third of a certain work in 5 and 10 days, respectively, Working together, in how many days will they be able to complete double of the work?
Study the bar graph and answer the question that follows.
The extent of construction of new railway tracks (in km) in four railway sectors A, B, C, D during two consecutive financial years Y1 and Y2 is presented through the given bar graph.
How much is the percentage increase in the railway track length from Y1 to Y2 greater for B than that for D from Y1Â and Y2?
Simplify the foHowing expression.
$$4-3$$ of $$\left(1\frac{1}{2}+\frac{1}{3}\div\frac{1}{2} of 4 -\frac{1}{4}\right)$$
A retailer purchased 50 kg of a vegetable from a wholesale market. He sold half of it at a profit of ₹450, and the rest at a loss of ₹275. What was the difference (increase ₹) between the two selling prices per kg of the vegetable?
The value of $$5\frac{6}{29}-\left[\frac{15}{4}\div\left\{\frac{3}{4}\times\left(\frac{3}{2}-\frac{1}{5}-\frac{1}{3}\right)\right\}\right]$$ is:
Three jugs of equal capacity are filled with mixtures of milk and water in the proportions 3 : 1, 7 : 1 and 11 : 5. The three jugs are emptied into a single container. What will be the ratio of water to milk in the said container?
While listing N consecutive even numbers for determining their average, the last number, by mistake, got replaced by the next odd number and thereby the average turned out to be more than the desired value by 0.0125. What is the value of N?
A sum of ₹16,000 invested at compound interest, amounts to a ₹21.160 in two years. What is the rate per cent per annum?
The lengths of one side and a diagonal of a rectangle are 63 cm and 65 cm, respectively. What is the perimeter (in cm) of a square whose area is one-seventh of that of the rectangle?