exam Maths Puzzle Numerical Ability

solve the inequality

3y-4>-37

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exam Other Question

Could someone help me I am confused .
Simplify and evaluate (x^3 y^-4 z^0 / 5x^6 y^8)^3 sheila practiced 1 1/2 hours on monday, 3 3/4 hours on Tuesday, and 2 1/4 hours on Wed. What is the total number of hours that she practiced?

I got down to 30/4 = 7 2/4. But can I reduce it to 8 1/2 ?