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If we set the unknown distance (in miles) as x, then we set up an equation according to the data, we can solve for x.

Time taken to go to resort : x/48

Time taken to return : x/40

Total time = x/48+x/40 = 11

Solve for x

common multiple between 48 and 40 = 240

so

5x/240 + 6x/240 = 11

(5x+6x)/240 = 11

11x = 11*240, => x=240

**Distance from home to resort is 240 miles**

Since the required number is between 234 and 250, then the first digit of the number is 2 and the second digit can either be 3 or 4.

Let the second and the third digits be x and y respectively, then

2 + x + y = 2y

Consider when the second digit is 3, then

2 + 3 + y = 2y

5 = y

Thus, the number is 235.

Similarly, consider when the second digit is 4, then

2 + 4 + y = 2y

6 = y

Thus, the number is 246.

Since the required number is an even number, therefore, **Isabel's number is 246.**

Of course.

You can only say for sure that 1/4 of a whole thing is less than 1/3 of a whole thing

if the whole things are equal size.

If Marty's pizza was 1/3 bigger than Luis' pizza, then they both ate the same amount.

If Marty's was MORE than 1/3 bigger than Luis', then Marty ate more pizza.

125^4/3 = 625

log{125}[625] = 4/3

125 - the base of logarithm