71/3 - 21/4 (2 1/5 × 3/4) with working
2 answers:
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The rate a computer works is 1/time. Working together, you add the rates.
Let new computer be x, old computer be y.
x = y - 7
Rounded to nearest tenth gives:
x = 23 hours
Let new computer be x, old computer be y.
x = y - 7
Rounded to nearest tenth gives:
x = 23 hours
Step-by-step explanation:
Answer above
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