Answer:
12.1
Explanation:
Let the number be " x ".
The sum of a number and 2.6,
x + 2.6
1/3 times the sum of a number and 2.6
1/3 * ( x + 2.6 ) = ( x + 2.6 )/3
1/3 times the sum of a number and 2.6 is 4.9
( x + 2.6 )/3 = 4.9
x + 2.6 = 4.9 * 3
x + 2.6 = 14.7
x = 14.7 - 2.6
x = 12.1
Therefore,
the number is 12.1