exam Maths Puzzle Numerical Ability

Two trains leave a city traveling at rates of 55 mi/h and 65 mi/h. The faster train leaves 30 minutes after the slower train. How long will it take for the faster train to pass the

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exam Other Question
solve for y in each of the following equations

y = xz x = 2, z = 5 Here is another one I can not figure out. I am confused on what procedure. Can someone help me.
Multiply the following:

(x/3 + 3/4)(3x/4 - 3/5)