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In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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04 Mar 2019, 14:38
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75% (01:48) correct 25% (02:30) wrong based on 36 sessions
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In a certain month, a pizzeria sold 75 pizzas in the first week, twice as many in the second week as in the first, two thirds more in the third week than in the first, and three fifths as many in the fourth week as in the second. What is the average number, per week, of pizzas sold by the pizzeria? A. 100 B. 105 C. 110 D. 115 E. 120
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Re: In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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04 Mar 2019, 22:13
Solution Given:• In a certain month, a pizzeria sold 75 pizzas in the first week, twice as many in the second week as in the first, two thirds more in the third week than in the first, and three fifths as many in the fourth week as in the second. To find:• The average number of pizzas sold by the pizzeria per week. Approach and Working:• Number of pizzas sold on the first week = 75 • Number of pizzas sold on the second week = 75 x 2 = 150 • Number of pizzas sold on the first week = 75 + 2/3 x 75 = 75 + 50 = 125 • Number of pizzas sold on the first week = 150 x 3/5 = 90 Total number of pizzas sold in the whole month = (75 + 150 + 125 + 90) = 440 • Therefore, average number of pizzas sold in the month = 440/4 = 110 Hence, the correct answer is option C. Answer: C
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Re: In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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04 Mar 2019, 21:15
SajjadAhmad wrote: In a certain month, a pizzeria sold 75 pizzas in the first week, twice as many in the second week as in the first, two thirds more in the third week than in the first, and three fifths as many in the fourth week as in the second. What is the average number, per week, of pizzas sold by the pizzeria?
A. 100 B. 105 C. 110 D. 115 E. 120 75 2*75 = 150 75+((2/3)*75) = 125 3/5 * 150 = 90 75+150+125+90 = 440 440/4 = 110 Hence C is the correct answer.
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Re: In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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06 Mar 2019, 02:54
week 1 = 75 week2 = 150 week 3 = 50+75 = 125 week 4= 90 sum = 440 avg  440/4 IMO C 110 SajjadAhmad wrote: In a certain month, a pizzeria sold 75 pizzas in the first week, twice as many in the second week as in the first, two thirds more in the third week than in the first, and three fifths as many in the fourth week as in the second. What is the average number, per week, of pizzas sold by the pizzeria?
A. 100 B. 105 C. 110 D. 115 E. 120



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Re: In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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08 Mar 2019, 08:05
SajjadAhmad wrote: In a certain month, a pizzeria sold 75 pizzas in the first week, twice as many in the second week as in the first, two thirds more in the third week than in the first, and three fifths as many in the fourth week as in the second. What is the average number, per week, of pizzas sold by the pizzeria?
A. 100 B. 105 C. 110 D. 115 E. 120 We see that the pizzeria sold 150 pizzas in the 2nd week and (1 + 2/3) x 75 = 5/3 x 75 = 125 in the 3rd week and 3/5 x 150 = 90 in the 4th week. So the average number of pizzas sold per week was: (75 + 150 + 125 + 90)/4 = 440/4 = 110 Answer: C
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Re: In a certain month, a pizzeria sold 75 pizzas in the first week, twice
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08 Mar 2019, 08:05






