Question

6. A pulley revolves at a speed that is inversely proportional to its diameter. A pulley with a diameter of 12 cm is belted to a pulley with a diameter of 8 cm. If the smaller pulley is revolving at is the larger pulley revolving?

7. A box of sweets is divided among 24 children, so that they will get 5 sweets each. How many sweets would each get, if the number of children is reduced by 4?

8. A car takes 2 hours to reach a destination by travelling at a speed of 60 km/h. How long will it take, when the car travels at a speed of 80 km/h?

9. A bicycle dealer has * 20,000 to invest, when a bicycle is available for 800. If the price of a bicycle increases by 25%, find the number of bicycles he can purchase with the same sum?​

Answer 1

Answer:

8. 3/2

Step-by-step explanation:

8. Distance = Speed x Time

= 60x 2

= 120 km

A/c to question, D = 120 km and speed= 80km/ h

Time = Distance/ Speed

= 120/ 80

= 3/2 sec