0 0 votes Three small pumps and one additional pump are filling a tank. Each of the three small pumps works at $2/3$ rd the rate of the large pump. If all $4$ pumps work at the same time, then they should fill the tank in what function of time that it would have taken the large pump alone? $4/7$ $1/3$ $2/3$ $3/4$ Quantitative Aptitude cat2002 quantitative-aptitude work-time pipes-cistern + – go_editor 14.2k points 1.3k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.