Ram, Krish and Bhim can complete a work in 30 days. If Ram and Krish together can complete the same work in 40 days, then how long will Bhim take to complete it?
60
80
100
120
Explanation:
Ram + Krish + Bhim’s work = $\\dfrac{1}{30}$
Ram and Krish’s work= $\\dfrac{1}{40}$
Bhim’s work = $\\dfrac{1}{30}$- $\\dfrac{1}{40}$= $\\dfrac{1}{120}$
Ram + Krish + Bhim’s work = $\\dfrac{1}{30}$
Ram and Krish’s work= $\\dfrac{1}{40}$
Bhim’s work = $\\dfrac{1}{30}$- $\\dfrac{1}{40}$= $\\dfrac{1}{120}$