The average of the three numbers p . q, and r is p . q What does r equal ?
3.p.q - p - q
p.q - p - q
3.p .q + p + q
3.p.q - (p-q)
What is the average of marks a student who received 90 in English, 84 m Algebra, 75 in French, and 76 in Music, if the subjects have the following weights : English 4, Algebra 3, French 3 and Music 1 ?
78
81
82
83
An art club of 5 boys and 4 girls makes craft projects. If the girls average is 2 projects each and the boys average is 3 projects each, what is the total number of projects produced by this group ?
12
19
22
23
A certain olive orchard produces 315 gallons of oil annually, on average, during four consecutive years. How many gallons of oil must the orchard produce annually, on average, during the next six years, if oil production for the entire 10-year period is to meet a goal of 378 gallons per year ?
230
250
396
420
A salesperson earns twice as much in December as in each of the other months of a year. What part of this salesperson's entire year's earnings is earned in December ?
LCM of two numbers is 28 times their HCF. The sum of HCF and LCM is 1740. If one of these numbers is 240, the sum of digits of the other number is -
2
5
6
8
Parul scores 88,86 and 90 on her first 3 exams. What must she score on her fourth examination to receive an average of 91 ?
90
92
98
100
Rekha's current age is 24 years greater than her son Dev's age. In 8 years, Rekha's age will be twice Dev's age at that time. What is Rekha's current age ?
28
40
42
48
If the average of the first sixteen positive integers is subtracted from the average of the next sixteen positive integers, what is the result ?
16
24
64
Ravi is 5 years older than Amar. In 5 years, Ravi will be twice as old as Amar is now. How old is Ravi now ?
15
26
29