20/52 = b/100
20 x 100/52 x b
2000/ 52b
b = 38.5
Explanation:
b is a variable that stands for the unknown quantity
Write 20/52 as equal to b/100
Next we cross multiply 20 by 100 = 2000 and 52 by b = 52b
2000/52b is equal to 38.46 but roundest to the nearest tenth it is 38.5
