book Maths Puzzle Numerical Ability

how do you solve the equation 3x = 3(3x + 1).

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book Other Question

The temperature of an ideal gas was held at 400 degrees C. The initial pressure and volume were 750 torr and 50 ml respectively. What would the final pressure be if the volume were increased to 1500 ml? HOW MANY BIRTHDAYS WILL YOU CELEBRATE IF YOU ARE ONE MILLION MINUTES OLD?

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