For the following questions answer them individually
P and Q can do a work in 12 days and 16 days respectively. P started the work alone. After how many days should Q join P, so that the work is finished in 9 days?
In a certain code language, 256 means 'you are good', 637 means 'we are bad', 358 means 'good and bad'. Find the code for 'and'.
P and Q can complete a job in 12 days and 16 days respectively. They work together for 4 days. What portion of work is left for completion?
Find the ODD fraction.
$$\frac{18}{72}, \frac{24}{96}, \frac{51}{204}, \frac{108}{432}, \frac{18}{90}$$
Arun went to a nearby city at a speed of 25 km/h and returned at 20 km/h. If the total time for the trip was 1 hour 48 minutes, what is the distance of his place from the city?
What type of lines are represented by the equations $$6x - 3y + 10 = 0$$ and $$2x - y + 9 = 0$$ ?
