Answer:
option A is correct
Explanation:
Given:
The length to be painted = m miles
The width to be painted = t inches
Area painted in 1 gallon = p square feet
Converting the every given dimension in feet, we have
length to be painted = m × 5280 feet
width to be painted = t/12 feet
area to be painted = (m × 5280 feet) × t/12 feet
now, applying the unitary method, we have
p square feet is painted ⇒ 1 gallon
1 square feet is painted ⇒ 1/p gallon
(m × 5280 feet) × t/12 feet square feet is painted ⇒ [(m × 5280 feet) × t/12 feet ] × 1/p gallon
thus, we get the gallons of paint required as 5820 mt/12p
hence option A is correct
