the supply store sells 4 pencils for every 5 pens the store sold 28 pencils yesterday how many pens did it sell
Let's assume the number of pens the store sold yesterday is represented by x.
According to the given information, the store sold 4 pencils for every 5 pens. This can be written as:
4/5 = 28/x
Cross-multiplying, we get:
4x = 5 * 28
4x = 140
Dividing both sides by 4, we find:
x = 35
Therefore, the store sold 35 pens yesterday.