Kim takes 2 hours to plant 150 flower bulbs, and Kay takes 3 hours to plant 210 bulbs. Which rational equation could be used to determine the time t it takes Kim and Kay working together to plant 580 flower bulbs?

The answer is 4 hours.

Step-by-step explanation:

First you have to find how many flowers they can plant in 1 hour which for Kim is 75 and for Kay is 70 (just divide 150 divided by 2 and 210 divided by 3). Then add 75 + 70, which equals 145, then you have to find out what times 145 equals 580 which is 4, therefore the answer is 4 hours.

easypeasy sksksksk:p

it would take them 4 hours to plant 580 together