Answer:
And find it all urself
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Given
Here the given figure can be divided into two shapes i.e. rectangle and a trapezium
For rectangle ABCD Area = 
Area of trapezium CEFD Area is ![\frac{1}{2}[\text{sum of non-parallel sides}]\times[\text{distance between them}]](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%5B%5Ctext%7Bsum%20of%20non-parallel%20sides%7D%5D%5Ctimes%5B%5Ctext%7Bdistance%20between%20them%7D%5D)
Total shaded area 
The distance is 20 speed 58 =h
20×58 in 1 hour =1160
In 10 days they will have the same amount of cards
I think you have to multiply 2 1/2 by 5 which gives you 12 1/2