An astronaut weighs 170 pounds on Earth but only 68 pounds on Mars. While visiting the planet, the astronaut removes a rock sample that weighs 25 pounds on Mars.
What is the weight of the rock sample on Earth?
Help me solve.
d. not enough info.
The ratio of the man's weights on Earth and Mars should be equal to the ratio of the rocks weight on Earth and Mars. By letting x be the stone's weight on Earth, the equation that best describe the condition is,
(170 pounds / 68 pounds) = (x pounds / 25 pounds)
The value of x is 62.5 pounds. If the units of the choices in the pounds then, it is not among the choices.