Question

On Tuesday, the value of a stock decreased by 12 point. On Wednesday, the value increased by 34 point. On Thursday, the value decreased by 3/8 point. What was the change in the stock's value after three days?

Answer 1

We know that

• On Tuesday, the value of a stock decreased by 12 points.

,

• On Wednesday, the value increased by 34 points.

,

• On Thursday, the value decreased by 3/8 points.

Remember that "decreased" refers to a negative number, and "increase" refers to a positive number. So, we just have to express the following.-

$-\frac{1}{2}+\frac{3}{2}-\frac{3}{8}$

To solve this, we use the least common multiply which is 8. Then, we divide the denominators by 8 and that result we multiply it with the numerators.

$-\frac{1}{2}+\frac{3}{2}-\frac{3}{8}=\frac{-4+12-3}{8}=\frac{5}{8}\approx0.625$

Therefore, the stock value increased 0.625 points.