Question

To see how fast the moss was growing students recorded how long it took the moss to cover a rule. After one hour, the moss had covered 1 1/8 inches of the ruler. After two hours, it had covered another 1 1/3 inches of the ruler. How much of the ruler did the moss cover altogether after two hours?

Answer 1

Answer:

The moss will cover $2\frac{11}{24}$ inches of the ruler after 2 days.

Step-by-step explanation:

After one hour, the moss had covered $1\frac{1}{8}$ inches of the ruler.

Again, after two hours, it had covered another $1\frac{1}{3}$ inches of the ruler.

Therefore, after two hours the moss covers altogether ($1\frac{1}{8} + 1\frac{1}{3}$) inches of the ruler.

Now, ($1\frac{1}{8} + 1\frac{1}{3}$)

= $\frac{9}{8} + \frac{4}{3}$

= $\frac{9\times 3 + 4 \times 8}{24}$

= $\frac{59}{24}$

= $2\frac{11}{24}$ inches

Therefore, the moss will cover $2\frac{11}{24}$ inches of the ruler after 2 days. (Answer)