Answered

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The telephone at the family store rang 156 times in the morning, a bunch during lunch, and 201 times that afternoon. During the whole day the phone rang 562 times. How many times did it ring at lunch?

Sagot :

Data

• Morning: 156 times

,

• Lunch: x times

,

• Afternoon: 201 times

,

• Whole day: 562 times

Procedure

To know how many times did it ring at lunch, we have to build a relation, in which we know that the addition of the times in the morning, lunch, and afternoon equal the times it rang the whole day:

[tex]156+x+201=562[/tex]

Then, we have to solve for x considering that it represents the times it rang during the lunch.

[tex]156-156+x+201-201=562-156-201[/tex][tex]x=562-156-201[/tex][tex]x=205[/tex]

Answer: It rang 205 times during the afternoon.

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