question_answer 1)

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

Answer:

                (a) Speed of a cycle which is 15 km per hour to the speed of scooter which is 30 km per hour Ratio of the speed of cycle which is 15 km per hour to the speed of scooter which is 30 km per hour = 15 km per hour : 30 km per hour = 15 : 30 \[=\frac{15}{30}\] \[=\frac{1}{2}\] = 1 : 2 (b) 5 m to 10 km 10 km = 10 \[\times \] 1000 m = 10000 m \[\therefore \] Ratio of 5 m to 10 km = 5 m : 10 km = 5 m : 10000 m = 5 : 10000 \[=\frac{5}{10000}\] \[=\frac{1}{2000}\] = 1 : 2000 (c) 50 paise to Rs 5 \[\therefore \] Ratio of 50 paise to Rs 5                 = 50 paise Rs 5                 = 50 paise : 500 paise                 = 50 : 500 \[=\frac{50}{500}\] \[=\frac{1}{10}\] = 1 : 10