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David saved $175 each month for the first five months and then saved $225 each month for the next five months.
What is the average amount David saved each month?
Answer: 200 Equation: 175 × 5 + 225 × 5 ÷ 10 = 200 Explanation: to find the average, you add up all the numbers, then divide by how many numbers there are.
1st five months saved $175 each for five months. 175 x 5 = $875 2nd five months saved $225 each for five months. 225 x 5 = $1125 Add both amounts:$875 + $1125 = 2000 Divide by the number of months which was ten month worth of savings. 2000/10 = $200 average saved each month
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