Q. 14.4( 9 Votes )

# Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?

A. 2 and 3

B. 8 and 12

C. 15 and 20

D. 25 and 37.5

Answer :

Since, u and v vary directly, u.e.

If u = 10 and v = 15, then,

In option (a)

In option (b),

In option (c),

In option (d),

So, option (c) is not a possible pair of corresponding values of u and v.

Hence, option (c) is correct.

Rate this question :

A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to cover a distance of 540 kilometres by this car?

NCERT - Mathematics ExemplarTruck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is

NCERT - Mathematics ExemplarIn which of the following case, do the quantities vary directly with each other?

NCERT - Mathematics ExemplarThe variable x is inversely proportional to y. If x increases by p%, then by what percent will y decrease?

NCERT - Mathematics ExemplarA bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the batsman?

NCERT - Mathematics ExemplarThe following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas.

Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of gas?

NCERT - Mathematics ExemplarMs. Anita has to drive from Jhareda to Ganwari. She measures a distance of 3.5 cm between these villages on the map. What is the actual distance between the villages if the map scale is 1 cm = 10 km?

NCERT - Mathematics Exemplar