Question1
Maria studied the traffic trends in India. She found that the number of cars on the road increases by each year. If there were 80 million cars in year 1 of her study, how many more cars were on the road in year 3 compared to year 2 ?
8,800,000
88,000,000
96,800,000
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Studdy Solution
STEP 1
What is this asking?
If the number of cars grows by 10% each year, starting with 80 million, how many *more* cars are there in year 3 than in year 2?
Watch out!
Don't just calculate the number of cars in year 3.
We need the *difference* between year 3 and year 2!
STEP 2
1. Calculate cars in year 2.
2. Calculate cars in year 3.
3. Find the difference.
STEP 3
Alright, so we **start** with 80 million cars.
After one year, there's a **10% increase**.
That means we multiply by .
Why? Because multiplying by 1 keeps the original amount, and multiplying by 0.10 gives us the 10% increase.
Adding them together gives us the **new total**.
STEP 4
So, the number of cars in year 2 is .
Boom! **88 million** cars in year 2.
STEP 5
Now, we do the *same thing* again!
We take the number of cars in year 2, which is **88 million**, and multiply by to find the number in year 3.
Remember, multiplying by is the same as adding 10% to the current amount.
STEP 6
So, .
Awesome! **96.8 million** cars in year 3.
STEP 7
The problem asks for how many *more* cars there are in year 3 compared to year 2.
So, we just **subtract** the number of cars in year 2 from the number in year 3.
STEP 8
That's .
So, there are **8.8 million** more cars in year 3 than in year 2!
STEP 9
The answer is **8,800,000**.
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