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Answer:
8 Weeks
Step-by-step explanation:
First let's collect the given data:
• Class A:
- Starts at 8 cm
- grows at 3.5 cm/week
• Class B:
- Starts at 10cm
- grows at 3.25 cm/week
Class B's plant starts out 2 cm taller and Class A's plant grows 1/4 cm faster. So, to find when these two will be at an equal height, divide 2 cm by 1/4.
2 ÷ 1/4 =
2 × 4/1 =
2 × 4 =
8
It will take 8 weeks for the plants to be at an equal height.