Betty earns $52.65 per week working as a lifeguard. she worked as a lifeguard for 5 weeks. she also earned $46.25 painting faces at a carnival. she spent $16.25 of her total earnings to buy a book. betty put 1 over 6 of the remaining money in her savings account. betty used the following steps to find the total money she put in her saving account: step 1: [ ($52.65 ⋅ 5) $46.25 - $16.25] ⋅ 1/6 step 2: [$263.25 $46.25 - $16.25] ⋅ 1/6 step 3: 293.25 ⋅ 1/6 step 4: $1,759.50 in which step did betty first make an error? use words to explain how betty can correct her error.

Question

Xzavier Ayala

Mathematics

25 March, 16:03

Betty earns $52.65 per week working as a lifeguard. she worked as a lifeguard for 5 weeks. she also earned $46.25 painting faces at a carnival. she spent $16.25 of her total earnings to buy a book. betty put 1 over 6 of the remaining money in her savings account. betty used the following steps to find the total money she put in her saving account: step 1: [ ($52.65 ⋅ 5) $46.25 - $16.25] ⋅ 1/6 step 2: [$263.25 $46.25 - $16.25] ⋅ 1/6 step 3: 293.25 ⋅ 1/6 step 4: $1,759.50 in which step did betty first make an error? use words to explain how betty can correct her error.

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Answers (1)

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Dane Hays · Answer 1

If you would like to find the step where Betty first made an error, you can do this using the following steps:

Step 1: ($52.65 * 5 weeks + $46.25 - $16.25) * 1/6 = (52.65 * 5 + 46.25 - 16.25) * 1/6

Step 2: ($263.25 + $46.25 - $16.25) * 1/6 = (263.25 + 46.25 - 16.25) * 1/6

Step 3: $293.25 * 1/6 = 293.25 * 1/6

Step 4 : $48.875 = $48.88

Betty first made an error in step 4 (she multiplied 293.25 by 6 and not by 1/6).