Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
If John wins d dollars in addition to the number of dollars [#permalink]
16 Aug 2003, 04:50
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
HideShow timer Statistics
This topic is locked. If you want to discuss this question please re-post it in the respective forum.
1. If John wins d dollars in addition to the number of dollars he had originally, he will have t times as much as he had originally. How many dollars did John have originally?
a. d-t^2 = 89
b. Had he gotten (d-20) dollars he would have had (t-2) times as much as he had originally.
2. Machine A can produce x bottles per minute. Machine B can produce twice the amount of machine A at the same time. Machine C can produce twice the amount of machine B at the same time, and so on. If a factory owns 6 such machines, how many bottles can it produce in 15 minutes?
a. Machine A can produce 225 bottles in 45 minutes.
b. Machine D produces 60 bottles more than machine B in 2 minutes.
3.In country X, both the ministry of defense and the ministry of foreign affairs received an identical budget increase in dollars. Which of the two ministries received a greater total budget?
A . The budget of the ministry of defense increase by 7 percent.
B. The budget of the ministry of foreign affairs increased by 8 percent.
1. b? if we call Q to the amount of dollars he had originally, the stem tells us that Q+D=T*Q... so Q=D/(T-1)... a) tells us that D=89+T^2, which is not suf... b)tells us that (D-20)+Q=(T-2)*Q... substracting this equation from Q+D=T*Q, we get Q=10