In one day annie traveled 5 times the sum of the number of hours brian traveled and 2. together they traveled 20 hours. find the number of hours each person traveled.

In order to solve this mathematical problem we can first consolidate and observe the given values and the values that are not known in the stated problem. Annie traveled 5 times the sum of the number of hours Brian traveled and 2. Together they traveled 20 hours. Find the numbers.
Equation,
1.  5(y) + 2 = 20
2.  5y = 20 – 2
3.  5y = 18
4.  Y = 18 / 5
5.  Y = 3.6
6.  5y = 5(3.6)
7.  Annie = 18
Hence, Annie traveled 18 hours while Brian traveled 3.6 hours.  

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table