Each of Tony’s items are $7.65
Each of Tanyas items are $10.2
1.87 is 8.5% of 22 so 8.5% of 80 is 0.085 x 80 so $6.80
First we have to find the areas of both circle using the formula

For larger circle,

For smaller circle,

Required probability

Correct option is the second option .
The LCD here is 20. Thus, 1/4 = 5/20. The sum of 5/20 and 13/20 is 18/20, which can be reduced to 9/10.