exam Maths Puzzle Numerical Ability

Michelle has 10 feet 10 inches of metallic framing to make a frame for an unusual jigsaw puzzle she has glued together. The length of the puzzle is 10 inches less than 2 1/3 times

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A cubical container without a top is to be made from plastic. Its outer dimensions are 5cm by 5cm by 5cm and the walls and the bottom are .25 cm thick. Find the volume of plastic used to make the container, to the nearest cubic cm. Mary Poppins invests a total of $13,500 in two savings accounts. One pays 2% annual interest and the other pays 3% annual interest. If her total annual interest is $352.70, how much did she invest in each account?