Quantitative Techniques Question 10
Question; Direction; Study the following table carefully and answer the questions given below it.
Percentage of Marks obtained by different students in different subjects SUBJECTS (Maximum Marks) STUDENTS Maths (150) Physics (150) Chemistry (150) Biology (100) Hindi (75) English (75) Marathi (50) Social Sci. (125) Vineet 84 82 70 77 64 66 78 84 Akanksh 90 84 62 63 60 86 70 70 Anusha 74 90 64 81 62 74 84 64 Swarup 62 64 76 79 70 82 86 90 Vikram 82 70 72 69 80 60 78 70 Monica 70 80 86 87 66 74 68 80 What are the average marks obtained by all students together in Physics?
Options:
A) 123 $\frac{1}{3} $
B) (b) 117 $\frac{1}{2} $
C) 123 $\frac{1}{2} $
D) 117 $\frac{1}{3} $
Show Answer
Answer:
Correct Answer; B
Solution:
- Average percentage in Physics = $\frac{82 +84 +90 +64 +70 +80}{6} $ = $\frac{470}{6} $ $\therefore $ Required average marks = $\frac{476}{6} $ % of 150 = $\frac{476}{6}\times 150 $ = $\frac{7140}{1} $ = $ 117 \frac{1}{2} $ Calculations (146 - 150); Population of village U = 60000 $\therefore $ Population of city Y= $\frac{60000 \times 100}{75} $ = 80000 Population of village P = $\frac{80000}{2} $ = 40000 Population of village Q = $\frac{48 \times 80000}{100} $ = 38400 Population of village R = $\frac{3}{5}\times 8000 $ = 48000 Population of village S = $\frac{60 \times 48000}{100} $ = 28800 Population of village T = $\frac{80 \times 38400}{100} $ = 30720
BETA
