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Sagot :
Answer:
Mai and Clare will complete the fourth and third signs respectively at 24 minutes after beginning the task
Mai and Noah won´t finish signs at the same time
Clare and Noah won´t finish signs at the same time
Step-by-step explanation:
A) During half an hour of work
Mai will finish signs at:
6 12 18 24 32 ( out of the range of 1/2 hour)
for Clare finishing time are:
8 16 24 32 out
And Noah
5 10 15 20 25 30 no more
Mai and Clare will complete the fourth and third signs respectively at 24 minutes after beginning the task
Mai and Noah won´t finish signs at the same time
Clare and Noah won´t finish signs at the same time
We can give answers to that type of question, just by examining the products of time making the sign * each different sign, as we did.
In fact, 24 is the minimum common multiple of 6 and 8
6 * 4 = 24
8 * 3 = 24
And that is the required condition to get finished signs at the same time.
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