Are the following statements true ? (e) 45 km : 60 km = 12 hours : 15 hours

Are the following statements true ? ( c) 99 kg : 45 kg = ₹ 44 : ₹20

Are the following statements true ? (a) 40 persons : 200 persons = ₹15 : ₹75

State whether the following statements are always true, always false or ambiguous. Justify your answers. (ii) The distance from the Earth to the sun is approximately 1.5 xx10^8 km.

Answer the following: (e) A bus travels at v km per hour. It is going from Daspur to Beespur. After the bus has travelled 5 hours, Beespur is still 20 km away. What is the distance from Daspur to Beespur? Express it using v.

Find the ratio of the following: (a) Speed of a cycle 15 Km per hour to the speed of scooter 30 Km per hour. (b)50 m to 10Km. (c)50 paise to Rs.5

Represent the following situations in the form of quadratic equations : A train travels a distance of 480 km at a uniform speed. If the speed had been 8 km/h less, then it would have taken 3 hours more to cover the same distance. We need to find the speed of the train.

Sameera was driving a car with uniform speed of 60 kmph. Draw distance-time graph. From the graph find the distance travelled by Sameera in (i) (1)1/2 hours (ii) 2 hours (iii) (3)1/2 hours

Write opposites of the following : (b) 30 km north

Formulate the following problems as a pair of equations, and hence find their solutions. Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current.

Formulate the following problems as a pair of equations, and hence find their solutions : Ritu can row downstream 20 km in 2 hours, and upstream 4 km in 2 hours. Find her speed of rowing in still water and the speed of the current.