This week we learned about application of rational equations.

**The key for this part :*** *

**First : Read the problem slowly and carefully what is being asked.
Second : Introduce a variable to represent an unknown number
Third : Write an equation the questions gave then solve
And the last one : Write anser in sentence with the unit (km/h,cm..) **

Note :** less than, up stream** (-), **greater than or added, down stream** (+)

Let’s start with example to know more about it :

Example :

**Myra takes 2 hours to plant 450 flower bulbs. Francis takes 3 hours to plant 525 flower bulbs. Working together, how long should it take them to plant 1500 bulbs?**