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2 answers:
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Answer:
3 machine
Step-by-step explanation:
It is given that 6 machine each working at the same rate can complete the work in 12 days
We the has to complete in 8 days
Let we need x extra machine to complete the work in 8 days
So total number of machines =x+6
Now according to man work day equation
x=3 machine
Answer:
$49
Step-by-step explanation:
<u><em>Method 1</em></u><u><em>:</em></u>
100% - 65% = 35%
y · 100 = 35 · 140
100y = 4900
100y ÷ 100 = 4900 ÷ 100
y = 49
<u><em>Method 2</em></u><u><em>:</em></u>
y · 100 = 65 · 140
100y = 9100
100y ÷ 100 = 9100 ÷ 100
y = 91
$140 - $91 = $49