Advertisements
Advertisements
प्रश्न
Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
विकल्प
12 and 5
15 and 4
25 and 2.4
45 and 1.3
Advertisements
उत्तर
45 and 1.3
Explanation:
Since, x and y vary inversely, i.e. x × y = k ...(Constant)
If x = 10 and y = 6
∴ xy = 10 × 6 = 60
12 × 5 = 60
15 × 4 = 60
25 × 2.4 = 60
But 45 × 1.3 = 58.3
Hence, 45 × 1.3 = 58.3
APPEARS IN
संबंधित प्रश्न
In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?
The amount of extension in an elastic string varies directly as the weight hung on it. If a weight of 150 gm produces an extension of 2.9 cm, then what weight would produce an extension of 17.4 cm?
A and B can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
The shadow of a pole with height of 8 m is 6 m. If the shadow of another pole measured at the same time is 30 m, find the height of the pole?
Length of a side of a square and its area vary directly with each other.
The area of cultivated land and the crop harvested is a case of direct proportion.
44 cows can graze a field in 9 days. How many less/more cows will graze the same field in 12 days?
Here is a keyboard of a harmonium: What is the ratio of black keys to all keys on the given keyboard.
