Page 122 - NUMINO Challenge_D2
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3 In an orchard, 10 people needed to pick apples for 10 hours to finish
the work. After 5 people started to pick apples for 4 hours, 3 more
people came to work. From this point, how many more hours did they
need to pick apples to finish the work?
4 A 200-L container needed to be filled with water by turning on two
faucets, A and B. After faucets A and B were turned on to fill the
container with 110 L of water in the first minutes, faucet B was turned
off, and only faucet A was left on to fill the container. The container was
filled with 170 L of water after running the faucets for 20 minutes. How
many minutes did faucet A take to fill the container completely?
119Communication
the work. After 5 people started to pick apples for 4 hours, 3 more
people came to work. From this point, how many more hours did they
need to pick apples to finish the work?
4 A 200-L container needed to be filled with water by turning on two
faucets, A and B. After faucets A and B were turned on to fill the
container with 110 L of water in the first minutes, faucet B was turned
off, and only faucet A was left on to fill the container. The container was
filled with 170 L of water after running the faucets for 20 minutes. How
many minutes did faucet A take to fill the container completely?
119Communication
