The average of Kanchan's marks in 7 subjects is 75. His average in six subjects excluding Science is 72. How many marks did he get in Science ?

a. 72
b. 90
c. 93
d. None of these

• Ans:75*7-72*6=93
• 12 years agoHelpfull: Yes(4) No(0)
• option c)93
  in 6 subjects it is 72
  to get an increase of 3 in average, he needs to score (7*3) excess
  so it is 72+21=93 in 7th subject
• 12 years agoHelpfull: Yes(1) No(0)
• 75*7=525 and 72*6=432 also 525-432=93
• 9 years agoHelpfull: Yes(0) No(0)