1. you have the following formula for calculate the area of the original circular chip:
where d is the diameter of the circle.
2. then, if the diameter of the original circular chip is doubled (2d) to use in a new board game, the area of the new chip can be calculated with the following formula:
the answer is 4 minutes 30 seconds.
2/3 + 2/7
get a common denominator of 21
2/3*7/7 = 14/21
14/21 + 6/21
answer: 270÷90=3=30% have and 70% don't have a computer.