exam Maths Puzzle Numerical Ability

A tire manufacturer wishes to investigate the thread life of its tires. A sample of 10 tires driven 50,000 miles revealed a sample mean of 0.32 inches of thread remaining with a s

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A computer store sells 10 floppy diskettes for $15 and 30 diskettes for $40. Assume that the number of dollars varies linearly with the number of diskettes.
Write the particular Have I rounded this correctly. I am supposed to round to the nearest tenth. The number is 75.982 I have 76.0. is this correct? This gets confusing for me and I thank you for your time and help.