If Rebeca drives to work at x mph she will be one minute late, but if ...
The given problem involves determining the distance Rebeca drives to work based on her driving speed.
Let's analyze each statement separately:
Statement (1): x and y differ by seven miles per hour.
This statement provides the difference in speeds between x and y, but it doesn't provide any specific information about their values or the relationship between them. We cannot determine the distance based on this statement alone.
Statement (2): y is 11% greater than x.
This statement gives us a specific relationship between x and y, stating that y is 11% greater than x. However, without knowing the actual values of x or y, we cannot determine the distance Rebeca drives.
Considering both statements together:
When we combine the information from both statements, we can deduce some additional information. Let's say x represents Rebeca's driving speed in miles per hour. From statement (1), we can infer that y is x + 7 mph. Furthermore, statement (2) tells us that y is 11% greater than x. Mathematically, this can be expressed as y = x + 0.11x = 1.11x.
Now, we can set up equations based on the given time differences:
Equation 1: Distance / x = Time (One minute late)
Equation 2: Distance / y = Time (One minute early)
Since the distance remains the same in both equations, we can equate them:
Distance / x = Distance / y
Cross-multiplying, we get:
Distance * y = Distance * x
Since y = 1.11x (from statement 2), we can substitute it into the equation:
Distance * 1.11x = Distance * x
Dividing both sides by Distance and canceling out the common factor of Distance, we have:
1.11x = x
Simplifying further, we get:
0.11x = 0
This equation implies that x must be 0, which doesn't make sense in the context of the problem. Therefore, this scenario is not possible.
Hence, the combination of both statements (1) and (2) together is not sufficient to determine the distance Rebeca drives to work. Therefore, the answer is (E) Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data are needed.