Question

In the university examination james scored 55%in english and 80% in mathematics. what is the minimum percent he should score in science if he aims at getting 60% overall
(It is known that English and mathematics are for 150 marks each and science Ks for 200 marks)
A.48.75%
B.52.1%
C.42.12%
D.55%
Pls explain how to solve

Answer 1

Answer:A

Step-by-step explanation:

Total score of 3 subjects:500 marks

60% of total score:300

55% score of english:82,5

80% score of mathematics:120

so if james wants to get 60% overall ,he shoulg get 300-(120+82,5)=97,5 score.

and 97,5 is 48,75% of science score    (97,5 : 200 x 100)

so the answer is A

I am not a native so my explanation may be not clear and logical,i hope you will understand

Answer 2

Given :   james scored 55%in english and 80% in mathematics

English and mathematics are for 150 marks each and science   for 200 marks

To Find : minimum percent he should score in science if he aims at getting 60% overall

Solution:

Total Maximum marks = 150 + 150 + 200 = 500

Overall % = 60 %

= (60/100) 500  = 300

English Marks = (55/100)150  =  82.5

Maths Marks = (80/100)150  = 120

Minimum Marks in Science  = 300 - 120 - 82.5

= 97.5

% arks ins science = (97.5 / 200) * 100

= 48.75 %

minimum percent he should score in science if he aims at getting 60% overall  = 48.75 %

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