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30 January, 23:15

Omar's gas tank is 1/10 full. After he buys 6 gallons of gas, it is 2/5 full. How many gallons can Omar's tank hold?

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  1. 31 January, 02:11
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    1/10x + 6 = 2/5x

    6 = 2/5x - 1/10x

    6 = 4/10x - 1/10x

    6 = 3/10x

    6 / (3/10) = x

    6 * 10/3 = x

    60/3 = x

    20 = x < = = = the gas tank can hold 20 gallons
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