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1. In a class of 100 boys and 80 girls, 60% of boys and 60% of girls are members of the Honors Society. In a standardized test 75 boys and 65 girls in the class passed the test. Among those who passed the test 80% are members of the Honors Society. What percent of the nonmembers of the Honors Society passed the test (round it to the closest integer)?

 

2. Population of Losersville is decreasing at a rate of 10% every 3 years. At this rate what will be the percentage of the population of Losersville in 9 years from now compared to the current population (round it to the nearest integer)?

 

3. If two variables ‘m’ and ‘n’ are related by the equation: (m/n) = (3/5), how many different (m , n) combinations satisfy the equation?

 

4. A group of ‘n’ friends decided to rent a condominium for a one week vacation in Florida. They decided to share the weekly rent of ‘m’ dollars equally. If due to an unanticipated reason two members of the group couldn’t make the trip, and the rest of the friends decided not to charge the two who pulled out for the rent; what will be the additional amount each of the remaining friends must pay for renting the condominium?

 

5. If (x)1/3 + (x)1/2 = 12, what is the value of x?

 Nov 14, 2020
 #1
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Too many Q's for one post !  frown

 

 

(x)1/3 + (x)1/2 = 12 =

2/6 x  + 3/6 x   = 12

5/6 x = 12

x = 12 * 6/5 = .........

 Nov 14, 2020
 #2
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1.)    60% of the boys    .6 (100) = 60 boys in Honors

         60% of girls          .6 ( 80)   = 48 girls in Honors           total 108 Honors students    and   72 nonHonors in the class

 

      Total number of students who passed = 75+65 = 140  passed

          80 % of this 140 are Honors    .8(140) = 112       

                       the rest are non-Honors who passed  = 28

 

                     28 nonHonors passed  out of 72 total nonHonors

                                                                        28/72 x 100% = 38.9% of nonHonors passed the test 

 Nov 14, 2020
 #3
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2. If the population now is x, then in n years it will be \(0.9x^{\frac{n}{3}}\). Plugging n = 9 into the formula, the population would be 0.9x^3 = 0.729x which, rounded is about 73%.

 Nov 15, 2020
 #4
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Please Help! 

In the county agriculture fair the pumpkin B, grown by Bob, is bigger than the pumpkin C, grown by Chuck, but smaller than the pumpkin A, grown by Abe, then which of the following is true?

 Nov 19, 2020

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