Question
Four boys, Justin, Zane, Ethan and Riordan saved some money. Zane's savings was 45 of the total savings of Justin, Ethan and Riordan. Justin's savings was 20% of the total savings. Ethan's savings was 13 of the total savings of Zane and Riordan. If Zane's savings was $620, how much less was Justin's savings than the total of the other three boys?
4 m

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Four boys, Justin, Zane, Ethan and Riordan saved some money. Zane's savings was 45 of the total savings of Justin, Ethan and Riordan. Justin's savings was 20% of the total savings. Ethan's savings was 13 of the total savings of Zane and Riordan. If Zane's savings was $620, how much less was Justin's savings than the total of the other three boys?