To find the missing value for B, we can set up a proportion with the known values:
18 pencils / 72 pens = 35 pencils / 140 pens
To solve for B, we can cross multiply:
18 * 140 = 72 * 35
2520 = 2520
Since the equation is true, it means that B is the same as A, which is 168 pens.
Therefore, the missing value for B is 168 pens.
A teacher gives pens and pencils to elementary students at an equal rate.
Pencils Pens
18 72
29 A
35 140
B 168
Determine the missing value for the letter B.
38
42
63
70
1 answer
1 answer