Related InterviewSolutions

• The weekly expenses of a hostel are partly constant and partly vary directly as the number of inmates . If the expenses are rs 2000 when the number of inmates is 120 and rs 1700 when the number is 100 . Find the number of inmates when the expenses are rs 1880 .
• Complete the following table considering that the cost of apples and their number are in direct variation.Number of apples (x)14 -12 -Cost of apples (y)83256 -160
• If m ∝ n and when m = 154, n = 7. Find the value of m, when n = 14.
• x varies inversely as y, when x = 15 then y = 10, if x = 20, then y = ?
• The boxes are to be filled with apples in a heap. If 24 apples are put in a box then 27 boxes are needed. If 36 apples are filled in a box how many boxes will be needed?
• x ∝ (1/√y) and when x = 40 then y = 16. If x = 10, find y.
• The total remuneration paid to laborers, employed to harvest soybean is in direct variation with the number of laborers. If remuneration of 4 laborers is Rs 1000, find the remuneration of 17 laborers.
• Write the following statements using the symbol of variation. 1. Circumference (c) of a circle is directly proportional to its radius (r). 2. Consumption of petrol (l) in a car and distance traveled by that car (d) are in direct variation
• m ∝ n, n = 15 when m = 25. Hence i. Find m when n = 87, ii. Find n when m = 155.
• y varies inversely with x. If y = 30 when x = 12, find i. y when x = 15, ii. x when y = 18.