Question
The total mass of 9 shortbreads and 6 wafers is 510 g. Each shortbread has a mass five times as much as a wafer. Find the mass of a wafer.
4 m

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The total mass of 9 shortbreads and 6 wafers is 510 g. Each shortbread has a mass five times as much as a wafer. Find the mass of a wafer.