Question

1) There were three subjects for an examination.
marks allotted were 250, 150 and 100 respectively. One
student secured 70%, 60% and 45% marks in the
3 subjects respectively. What is the total percentage of
marks secured by him?​

Answer 1

Answer:

70/100=7/10

60/100=3/5

45/100=9/20

7/10+3/5+9/20=14/20+12/20+9/20=

35/20 converting to percentage so,

35/20*100= 175%ans.

Answer 2

Answer:

here' your answer......

Step-by-step explanation:

student secured marks

first subject marks

250×70/100=5*35=175 marks

lly second subject

150*60/100=3*30=90 marks

nd third subject

100×45/100=45 marks

now

total marks of exam is

250+150+100=500 marks

this is equal to 100%

student total secured marks

is

175+90+45=310 marks

thus

100%=500

??? %=310

cross multiply above

???? =100*310/500=62%

student got 62% of marks