He spent $56.17 on coffee.
Answer:
3/2 x 7/8 = (3×7)/(2×8)=21/16
Step-by-step explanation:
Your question has typographical errors. The equation is 2a + b = 15.7, not 2e+b-15.7
2a + b = 15.7
b = 15.7 - 2a
since a > b, a = 6.3 cm
b = 15.7 - 2·6.3 = 3.1 cm
the answer is <u>C</u>.