Question

If a blue snapper and a yellow back stickler are each 8 centimeters long, which of the following is closest to the difference in their lengths 18 months from non?

a) 0.15
b) 0.30
c) 0.45
d) 0.60

Answer 1

The correct answer is option d. To find the difference in lengths between the blue snapper and the yellow back stickler after 18 months, we need to calculate their individual lengths using their growth rates and subtract them. The closest value to the difference is 0.60 centimeters.

Step-by-step explanation:

To find the difference in lengths between the blue snapper and the yellow back stickler after 18 months, we need to understand how their lengths change over time. Let's assume that the blue snapper and the yellow back stickler grow at a constant rate. If the blue snapper is 8 centimeters long initially and grows by 0.2 centimeters every month, then after 18 months, its length will be:

Initial length + (growth rate × number of months) = 8 + (0.2 × 18) = 8 + 3.6 = 11.6 centimeters.

Similarly, if the yellow back stickler starts at 8 centimeters and grows by 0.25 centimeters per month, its length after 18 months will be:

Initial length + (growth rate × number of months) = 8 + (0.25 × 18) = 8 + 4.5 = 12.5 centimeters.

The difference between their lengths after 18 months is therefore:

Difference = Length of yellow back stickler - Length of blue snapper = 12.5 - 11.6 = 0.9 centimeters.

Based on the given options, the closest value to 0.9 centimeters is 0.60, so the correct option is d) 0.60.