It takes 1 hen 5 days to hatch 1 egg therefore it

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It takes 1 hen 5 days to hatch 1 egg. Therefore, it would take 1 hen 500 days to hatch 100 eggs. But because we have 100 hens, the 100 hens can hatch the 100 eggs in 500 ÷ 100 = 5 days. If sound travels at 1000 ft/s, after 3 s the sound should have traveled 3000 ft so the lightning is about 3000 ft away. !333 "333 = ! " so the lightning is about ! " mile away.
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RATES S4. It takes Rachel 15 minutes to drive one-third of the way to work. If she can drive twice as fast during the next two-thirds of the way to work, how long does it take her to get to work altogether? 15 minutes 20 minutes 30 minutes 45 minutes CHALLENGE QUESTIONS C1. When you ride your bike to the top of a 30-mile long hill, you average 10 miles per hour. When you turn around and return to your starting location, you average 30 mph. What is your average speed for the entire trip? Answer: 15 mph SOLUTIONS Since she will be driving twice as long at twice the rate, it will take the same amount of time to travel the final two-thirds of the way to work as it did the first one-third of the way. So, it takes her a total of 15 + 15 = 30 minutes to drive to work. Average speed = total distance ÷ total time. Your total distance is 60 miles, 30 miles in each direction. Your ride to the top will take 3 hours because you are riding at a speed of 10 miles per hour for 30 miles. Your ride to the bottom will take 1 hour because you are riding at a speed of 30 miles per hour for 30 miles. Therefore, your total time is 4 hours. Your average speed is 60 miles ÷ 4 hours = 15 miles per hour.
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C2. Two runners start on opposite ends of a circular track and begin running in opposite directions (towards each other). The distance around the track is 400 meters. If the first runner runs at a speed of 4 m/s and the second runner runs at a speed of 6 m/s how many times will they pass each other in 2 minutes? Answer: C3. Keller and Leon are parked back-to-back on the same circular, 120-meter racetrack. Flags are placed every 10 meters along the track, and labelled from 0 to 11. They start driving at the flag labelled 0 at the same time in opposite directions. If Keller races at a constant speed of 10 m/s in the direction of increasing flag numbers and Leon races at a constant speed of 20 m/s in the opposite direction, at which flag will they collide?
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