A.2 hours
B.3 hours
C.36 hours
B.3n - 7
C.3 - 7n
D.7n - 3
Answer:
B. 3n-7
Step-by-step explanation:
The words seven less than means that seven will be subtracted. 3 times a number means that 3 is being multiplied by an unknown value or variable. Thats how you get 3n - 7
The car can travel 96 Km in 6 liters.
The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
A car uses 5 liters of gasoline every 80 km.
So, the car travel in 1 liters of gasoline
= 80/5
= 16 liter
and, in 6 liter the can travel
= 14 x 6
= 96 Km
Hence, the car can travel 96 Km
Learn more about Unitary Method here:
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The Translation of the Question is
A car uses 5 liters of gasoline every 80 km. If there are 6 liters left in the tank, how many kilometers can the car travel?
Planteamos una regla de tres simple directa:
Litros de gasolina Kilómetros
5 80
6 x
x=(6*80)/5 = 96 Km
Solución: Podrá recorrer 96Km