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On January 1 of 2025, Website Nexus had 1,000 registered users, and Website Echo had 1,600 registered users. Each site gained a constant number of new users every month, and by May 1, 2025, Website Nexus had 250% more registered users than Website Echo.
In the table, select for
Nexus the number of registered users it gained per month and select for Echo the number of registered users it gained per month that would be jointly consistent with the given information. Make only two selections, one in each column.
Total reg users on May 1 for Nexus be 1000 + 4*a , where a be constant increase per month
Total reg users on May 1 for echo be 1600 + 4*b, where b is constant increase per month
Given
1000 + 4a = 1600 + 4b + 250/100(1600 + 4b)
1000 + 4a = 3.5(1600 + 4b)
500 + 2a = 3.5(800+2b)
500 + 2a = 2800 + 7b
2a - 7b = 2300
a = (2300 +7b)/2
Try values for starting with smallest 200 as b is definitely smaller than a.
b=200, a = (2300 + 1400)/2 , We don't have an answer choice ending with 350, No
b= 300, a = (2300 + 2100)/2 = 4400/2 = 2200, We don't have this choice, No
b=700, a = (2300+4900)/2 = 7200/2 = 3600. We have this choice.
Correct answer b=700, a=3600
| [color=#000000]Nexus[/color] | [color=#000000]Echo[/color] | |
| | [color=#000000]200[/color] |
| | [color=#000000]300[/color] |
| | [color=#000000]700[/color] |
| | [color=#000000]1,500[/color] |
| | [color=#000000]2,100[/color] |
| | [color=#000000]3,600 [/color] |