I got the same answer as you. Try to ask your teacher about it since it’s a math problem online or something.
A. length = meter = m (base)
b. volume = cubic meter = m³ (derived)
c. mass = kilogram = kg (base)
d. temperature = kelvin = K (base)
31/7 = 4 3/7.....3/7 is less then 1/2....so the closest integer is 4
744/1000 would be your answer
Add all of the hours together than divide by 5 should get 40
