Answer:
x=1/7
Step-by-step explanation:
x/2+x/5=1
make same denominators;
5x/10+2x/10=1
simplify;
7x=1
x=1/7
The lowest common multiple of 2 and 7 is 14, so 14 days will pass before he does both chores again.
Between 2 and 3, should be somewhere before .5
