the average of the marks of 10 students in a class is 80 . if the marks of each student are doubled , find the new average ?
"sum of the marks for the 10 students = 10 * 80 = 800 . the marks of each student are doubled , the sum also will be doubled . the new sum = 800 * 2 = 1600 . so , the new average = 1600 / 10 = 160 . answer : c"
multiply(80, const_2)