exam Maths Puzzle Numerical Ability

student makes 338 points after 4 test worth 100 points. What is the least he could score for 82%. Shown as a formula. Answer is 72 Points I believe, but the corret formula is ???

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exam Other Question

(W+2)/(2W-2)=5 can you help solve for W in the steps so I can learn? The ratio of boys to girls inthe auditorium was 4 to 5. If there were 40 boys in the auditorium, how many girls were there? (hint: in this problem, the ratio 4 to 5 means that for every 4 boys there were 5 girls.)