Ria can paint a room in 4 hours. destiny can paint the same room in 6 hours. how long would it take ria and destiny to paint the room if they were working together? provide your answer in decimal form and omit units.

Time taken by Ria to paint a room = 4 hours

Time taken by Destiny to paint a room = 6 hours

If they work together, they complete 1 job. So,

The LCD of 4 and 6 is 12

Hence, both of them can paint the room in hours or 2.4 hours.

maybe i can

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: