a can do a piece of work in 90 days & y can do it in 80 days. they began working together but a leaves after some days and then b completed the remaining work in 46 days. the number of days after which a left the work was? Answers.
A) 12 days  B) 18 days  C) 16 days  D) 19 days  E) 21 days
<gadget id="calculator">1 / 80</gadget>
<output>1/80 = around 0.0125</output>

<gadget id="calculator">(1/80) * 46</gadget>
<output>23/40 = around 0.575</output>

<gadget id="calculator">1 - (23/40)</gadget>
<output>17/40 = around 0.425</output>

<gadget id="calculator">1 / 90</gadget>
<output>1/90 = around 0.011111</output>

<gadget id="calculator">(1/80) + (1/90)</gadget>
<output>17/720 = around 0.023611</output>

<gadget id="calculator">(17/40) / (17/720)</gadget>
<output>18</output>

<gadget id="calculator">18 - 2</gadget>
<output>16</output>

<result>C</result>
a can do a piece of work in 90 days & y can do it in 80 days. they began working together but a leaves after some days and then b completed the remaining work in 46 days. the number of days after which a left the work was?
subtract(divide(subtract(const_1, multiply(divide(const_1, 80), 46)), add(divide(const_1, 80), divide(const_1, 90))), const_2)
a and b did the work for some days . after that , b completed the remaining work in 46 days . in 46 days , word done by b = 1 80 x 46 = 23 45 remaining work = 1 – 23 / 45 = 17 / 45 remaining work is done by both a and b together = 17 / 45 x 90 x 80 / 90 + 80 = 16 days c