Q.8. A lift moves at the rate of 3 metre per 15 seconds in a skyscraper. If the lift starts coming down from a height of 70 m then find its position after 12 minutes.
Q.9. Every floor of a skyscraper is 8 m high. If a balloon rises 4 m every second, how long will it take to rise from the 32nd floor to the 96th floor?