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Step-by-step explanation:

11/12 - 5/8 =  ? Make the denominator the same (multiply the first term by 2 and the second term by 3).

22/24 - 15/24 = ? Just simplify/solve. 22-15=7.

7/24

OPTION A = 7/24

1.) 15%

2.) $156.86

3.) $40.43

Step-by-step explanation:

1.) 31.29 / 208.6 = .15 * 100 (for percent) = 15%

2.) 136.4 * 1.15 (the original bill plus 15%) = 156.86

3.) 57.75 * .7 = 40.425