Keisha read twice as many books this year as ben read. subtracting 4 from the number of books Keisha read and dividing by 2 gives the number of books Sheldon read. Sheldon read 10 books. How many books did Ben read?

Answer 1

books read by Ben ----- x
books read by Keisha --- 2x

Sheldon ------ (2x-4)/2

(2x-4)/2 = 10
2x-4 = 20
2x = 24
x = 12

Ben read 12 books
Keisha --- 24

Sheldon: (24-4)/2 = 10