Instructions

Study the following table carefully to answer these question:


Question 35

What are the average marks obtained by out of 80 by all the six students together in subject ‘Q’?

Solution

Marks obtained in subject Q by :

A = (84/100)*80 = 67.2

B = (79/100)*80 = 63.2

C = (81/100)*80 = 64.8

D = (85/100)*80 = 68

E = (66/100)*80 = 52.8

F = (70/100)*80 = 56

Total marks = 67.2+63.2+64.8+68+52.8+56 = 372

Avg marks = 372/6 = 62


(shortcut)

Sum of all % marks in subject Q = 84+79+81+85+66+70 = 465%

Now, 465% of 80 = 372 (As, max marks in subject Q is 80)

Avg marks = 372/ 6 = 62


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