If Robert bought a used car for 1500 if the tax is five percent what will be the total Robert had to pay for the car?

To calculate the total cost Robert had to pay for the used car, first, find the tax amount by multiplying the purchase price by the tax rate: (1500 \times 0.05 = 75). Then, add the tax to the purchase price: (1500 + 75 = 1575). Therefore, the total Robert had to pay for the car is $1,575.