Which of the following pairs of blood components are relevant to blood typing? A red blood cells and white blood cells
O
B. red blood cells and serum
C. red blood cells and plasma
O
D. serum and plasma
O
E platelets and white blood cells

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

its probably to later but whats the question