the average of the marks of 10 students in a class is 40 . if the marks of each student are doubled , find the new average ?
"sum of the marks for the 10 students = 10 * 40 = 400 . the marks of each student are doubled , the sum also will be doubled . the new sum = 400 * 2 = 800 . so , the new average = 800 / 10 = 80 . answer : c"
multiply(40, const_2)