Tilly earns p dollars for every w hours of work. Which expression represents the amount of money, in dollars, Tilly earns for 39w hours of work?

Question

Accepted Answer

Choice A is correct. It’s given that Tilly earns p dollars for every w hours of work. This can be represented by the proportion p ⁄ w . The amount of money, x, Tilly earns for 39w hours of work can be found by setting up the proportion p ⁄ w = x ⁄ 39w . This can be rewritten as 39pw = xw. Dividing both sides by w results in x = 39p. Choice B is incorrect. This is the amount of money Tilly earns in dollars per hour, not the amount of money Tilly earns for 39w hours of work. Choice C is incorrect. This is the amount of money Tilly earns for w hours of work plus 39, not the amount of money Tilly earns for 39w hours of work. Choice D is incorrect. This is the amount of money Tilly earns for w hours of work minus 39, not the amount of money Tilly earns for 39w hours of work.

Want a deeper, personalized explanation?

Related questions