Question
A packet consisted of 129 purple, grey and brown beads. There were four times as many brown beads as grey beads, and 15 more grey beads than purple beads. How many grey beads were there in the packet?
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A packet consisted of 129 purple, grey and brown beads. There were four times as many brown beads as grey beads, and 15 more grey beads than purple beads. How many grey beads were there in the packet?