exam Maths Puzzle Numerical Ability

(Nine more than the product 4 and the number is 73). I am helping my niece and I am stumped, Help.....

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exam Other Question

y=x-2

2y=x+1
A type of steel sheet weighs 3.125 lb per square foot. What is the weight of a piece measuring 24 in. by 108in.? (Hint: Be careful of units.)