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olga nikolaevna [1]
3 years ago
8

A team is selling pop corn for a fundraiser. The first week, they sell 500 bags. The second week, they sell 50% more than the fi

rst week. During the third week, they sold 50% less than the second week. What is the group’s percent decrease from the first to the third week?
Mathematics
1 answer:
Dmitriy789 [7]3 years ago
4 0

Answer:

The percentage decrease from the first week to the third week is 25 %

Step-by-step explanation:

The number of popcorn bags sold on the first week = 500 bags

The second week, they sell 50% more than the first week

So, the number of bags sold on the second week is

= 500 + 50% of 500

=500 +  \frac{50}{100}  \times 500

= 500 + 0.5 \times 500

= 500 + 250

= 750 bags

The third week, they sold 50% less than the second week

So, the number of bags sold on the third week is

=  750 - 50% of 750

= 750 - \frac{50}{100} \times 750

= 750 -0.5 \times 750

= 750 - 375

= 375 bags

Now the percentage decrease from the first week to the third week is

=\frac{500 - 375}{500} \times 100

= \frac{125}{500} \times 100

= 0.25  \times 100

= 25 %

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