exam Maths Puzzle Numerical Ability

Researchers marked and released 36 pike in a pond. Later they counted 20 pike, 12 of which were marked. Estimate the pike population. Thanks

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Jean deposited a check for $625, wrote two for $68.74 and $29.95 and used her debit card to pay for a purchase of $57.65. How has her account balance changed?

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Sher Find the two real numbers whose sum is 18 and whose product is a minimum.

The perimeter of a rectangular ranch is 400 m. Find the dimensions of the ranch that will contain the g