The average of Sunil’s marks in five subjects i.e. (Mathematics, Science, Social science, Hindi and English) is 65 and average of three subjects i.e. (Science, Hindi and Social science) is 45. How much did he score in Mathematics and English together?
The average of Sunil’s marks in five subjects i.e. (Mathematics, Science, Social science, Hindi and English) is 65 and average of three subjects i.e. (Science, Hindi and Social science) is 45. How much did he score in Mathematics and English together? Correct Answer 190
Given:
Average of five subjects marks (i.e. Mathematics, Science, Social science, Hindi and English) = 65
Average of three subjects marks (Social science, Hindi and science) = 45
Formula used:
Average = Sum of all items/ no. of items
Calculation:
Sum of marks scored in five subjects (i.e. Mathematics, Science, Social science, Hindi and English) = 65 × 5 = 325 ----(1)
Sum of marks scored in three subjects (i.e. Science, Social science, Hindi) = 45 × 3 = 135 ---(2)
From (1) and (2)
Mathematics + English + Science + Social Science + Hindi = 325
Mathematics + English + 135 = 325
⇒ Mathematics + English = 325 – 135 = 190
∴ Marks scored in Mathematics and English together = 190