Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Two pipes take x minutes and (x+3) minutes respectively to fill a cistern. If together they fill the cistern in 3/1/13 ( it us in mixed fraction) minutes ,

So...time taken by 1st pipe to fill the cistern in 1 min=1/x...and the time taken by the second pipe to fill the cistern in 1 min=1/x+3...so..time taken by both the pipes when you they are running together=1/40/13=13/40...so 1/x+1/x+3=13/40=>120+80x=13x^2+39x=>13x^2-41x-120=0=>13x^2-65x+24x-120=0=>(13x+24)(x-5)=0=>x=5 and x=-24/13..so we know time cannot be negative soo..x=5mins(ans)