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Unitary method

A can do a piece of work in 40-days. He works at it for 8-days and then B finishes the remaining work in 16-days. How long will they take to complete the work, if they work together?

Unitary method

A and B separately do a work in 10 & 15 days respectively. They worked together for some days, and then A completed the remaining work in 5-days. For how many days had A & B worked together...

Graph the line

I have to graph the line through (0,4), m= - 4 I think I solved it correctly... I used the Y-Y1= m(X-X1) formula. My result was y=4x+4 (Is this correct?)   Now the problem I'm...

What reasoning process is this?

We examine the email addresses of 500 people. No two individuals from this group of people have identical email addresses. We conclude that for all people, no two people have identical email addresses...

Slope = Rise/Run

The Great Pyramid at Giza near Cairo, Egypt stands 137 meters tall.  It's base is a square with each side measuring 230 meters wide.  What is the slope of the Pyramid?   Slope...

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