exam Maths Puzzle Numerical Ability

adam tried tocompute the average of his 7 test scores. He mistakenly divide the correct sum of all of his test scores by 6 wich yielded 84. What is adams correct average test score?

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ans 72

avg = 84 * 6/7 =72
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exam Other Question

Translate to an inequality

the clearance of the bridge is less than 12 feet Please help 2x^2-2y^2 over3x^2 y^2 multiplied by 4x^2 y-4xy^2 over 6x^2+6xy

2x^2-2y^2.....4x^2 y-4xy^2
---------..X..------------
3x^2 y^2......6x^2+6xy

dots were used to