An amount of ₱14220 is made up with the notes of denominations ₱200, ₱100, ₱50, and ₱20. The number of ₱20 notes are 2 times the number of ₱50 notes. The number of ₱50 notes are 4 times the number of ₱100 notes. The number of ₱100 notes are 3 times the number of ₱200 notes. How many total notes of denomination ₱50 are there?
Both the non-diagonal sides of a right-angled isosceles triangle are decreased by ^@ 5 \% ^@. By what percentage does the size of the diagonal decrease?
Write an algebraic expression for the following using variables, constants and arithmetic operations: Difference of numbers ^@ x ^@ and ^@ y ^@ added with ^@ m ^@.