Question

15. (2) Third number = Sum of five numbers (Sum of first two numbers + Sum of last two numbers)
[
begin{array}{l}
=5 times 58-(2 times 48.5+2 times 53.5)
=290-(97+107)=290-204=86
end{array}
]

# erage of last two 15. The average of five num e average of five numbers is 58. he average of first two numbers is 48.5 and the average of last i numbers is 53.5. Find the third number. (1) 94 (2) 86 (3) 74 (4) 68

Solution