Question

amber's mean mark in five tests is 80. Her marks on four tests are 68,81,74 and 89. what is the fifth test result

Answer 1

hey mates your answer is here

.+5 zte=2 . 2 . ..[1]. Amber's mean mark on five tests is 80. Her marks on four of these tests are 68. 81. 74 and 89. Work out her mark on the fifth test. 10+68 +81 +74+89) -( 80)5.

may be it's helpful for you

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