WORD PROBLEMS 1

The sum of five consecutive numbers is 475. Find the 3rd number.

Solution

Let the numbers be as shown in the table below

1st number	2nd number	3rd number	4th number	5th number	TOTAL
n	n+1	n+2	n+3	n+4	475

Then, n + (n+1) + (n+2) + (n+3)+ (n+4) = 475

5n + 1+2+3 +4= 475

5n + 10= 475

5n = 475 -10

5n = 465

5n = 465

5        5

n = 93

3rd number = n + 2

                  = 93 + 2

                  = 95

Hence the 3rd number is 95

TRY THIS..................

The sum of five consecutive numbers is 510. Find the 3rd number.