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
Fill in the blank in of the following so as to make the statement true:
If u = 3 v, then u and v vary .... with each other.
If the cost of 93 m of a certain kind of plastic sheet is Rs 1395, then what would it cost to buy 105 m of such plastic sheet?
The second class railway fare for 240 km of Journey is Rs 15.00. What would be the fare for a journey of 139.2 km?
Two mobiles cost 16,000 rupees. How much money will be required to buy 13 such mobiles?
If half a meter of cloth costs ₹ 15. Find the cost of `8 1/3` meters of the same cloth
If C = kd
(i) what is the relation between C and d?
(ii) find k when C = 30 and d = 6
(iii) find C, when d = 10
Two quantities are said to vary ______ with each other if they increase (decrease) together in such a manner that the ratio of their corresponding values remains constant.
Length of a side of a square and its area vary directly with each other.
A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3` hours?
Kusum always forgets how to convert miles to kilometres and back again. However she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to go?
