Please help me fast its for plato and someone help me with some steps because my tutorial still has me confused on how to solve it
whats the numerator for the following rational expression?
1/b+4/b= ?/b

Aplane is flying at 32,500 feet. it needs to rise to 36,000 feet in two stages.• in stage 1, it rises 5% of its initial altitude of 32,500 feet.• in stage 2, it rises at a rate of 125 feet per minute.how many minutes does it take for the plane to rise during stage 2?