Martha can paint a room in 2 hours. jamie can paint the same room in 6 hours. how long, to the nearest tenth of an hour, will it take them to paint the room together

1.5 hours

Step-by-step explanation:

we know that

1) Martha can paint a room in 2 hours

so

Martha can paint the 100% of the room in 2 hours

Find out what percentage of the room she can paint in an hour

using proportion

2) Jamie can paint a room in 6 hours

so

Jaimie can paint the 100% of the room in 6 hours

Find out what percentage of the room she can paint in an hour

using proportion

3) In one hour Martha and Jamie can paint

so

using proportion

Find out how long will it take them to paint the 100% room together

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation:

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.