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2 August, 08:06

A family member had some five-dollar bills and one-dollar bills in her wallet. Altogether she has 18 bills and s total of $62. Write the simultaneous linear equations that represent this situation. How many of each type of bill does she have?

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  1. 2 August, 11:18
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    O for ones and F is fives

    A) O + F = 18

    B) O + 5F = 62

    Multiply A) by - 1

    A) - O - F = - 18 then add to B

    B) O + 5F = 62

    4 F = 44

    11 Fives and 7 Ones

    Check

    11 * $5 = 55.00

    7 * $1 = 7.00
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