***HELP*** Meghan spends 25% more each year for auto insurance than Scott, and together they spend $1237.50 per year. How much does Meghan spend per year?

  $687.50

Step-by-step explanation:

The ratio of their insurance costs is ...

  Meghan : Scott = 1.25 : 1 = 5 : 4

Then the ratio of Meghan's cost to the total is ...

  Meghan : Total = 5 : (5+4) = 5 : 9

Meghan's cost is (5/9) × $1237.50 = $687.50.

Check

Scott's cost is $1237.50 -687.50 = $550.00. The ratio of Meghan's cost to Scott's cost is $687.50/$550.00 = 1.25, as required.