Two PIPES running together can fill a cistern in 3 1/13 MINUTES. If ONE pipe takes 3 minutes more than the other to fill it, find the time in which each pipe would fill the cistern?

there are 12 identical balld of different colours in a bag. if 6 more black balls are ADDED then the probability of drawings black balls increase by 1/12. find the original number of black ballsthere are 12 identical balld of different colours in a bag. if 6 more black balls are added then the probability of drawings black balls increase by 1/12. find the original number of black ballsthere are 12 identical balld of different colours in a bag. if 6 more black balls are added then the probability of drawings black balls increase by 1/12. find the original number of black ballsTwo pipes running together can fill a cistern in 3 1/13 minutes. If one pipe takes 3 minutes more than the other to fill it, find the time in which each pipe would fill the cistern?

Two pipes running together can fill a cistern in 3 1/13 minutes. If one pipe takes 3 minutes more than the other to fill it, find the time in which each pipe would fill the cistern?