Answer:

Step-by-step explanation:
we have the ratio

To write as percent, multiply the ratio by 100
so

5*6=30
and 6*5=30
basically we have to take Lcm of 5 and 6=30
30th day they both will be together
Answer: 2x+4=10
Step-by-step explanation:
because each notebook would cost $3 so 2 x 3 = 6 +4=10