this is easy
each month they either pay
120.95 per month for 2 people
or
62.77 per month per person or 62.77 time 2 people
so find which is greater: 120.95 or 62.77 times 2
find 62.77 times 2
we find that it is 125.54
125.54 is greater than 120.95
therefor it is less cost to buy a group plan
the could save 125.54-120.95=4.59
answers:
group plan
save $4.59