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lam21
03.07.2019 •
Mathematics
Nico is saving money for his college education. he invests some money at 9%, and $1700 less than that amount at 5%. the investments produced a total of $223 interest in 1 yr. how much did he invest at each rate? he invested $ at 9% and $ at 5%.
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Ответ:
The investments produced 223$ which means:
We use the first equation to eliminate
He invested 2200$ at 9% and 500$ at 5%.
Ответ:
20 miles.
Step-by-step explanation:
Let m be the miles traveled by the both Taxi.
Pick up charge of A-1 taxi = $12
Cost of travelling 1 mile = $0.15
Cost of travelling x mile = $0.15x
So, total cost of A-1 taxi =
--A
Pick up charge of Z-6 taxi = $10
Cost of travelling 1 mile = $0.25
Cost of travelling x mile = $0.25x
So, total cost of Z-6 taxi =
--B
Now we are supposed to find At what mileage is the cost for both taxi services the same.
So, equate 1 and 2
So, the cost for both taxi services will be same at 20 miles.