The average height of 10 boys is 170 cm. If one boy’s height is neglected, the average height is increased by 1 cm. Find the height of the neglected boy?
Question
The average height of 10 boys is 170 cm. If one boy’s height is neglected, the average height is increased by 1 cm. Find the height of the neglected boy?
Solution
Step 1: Calculate the total height of 10 boys. The average height of 10 boys is 170 cm, so the total height is 170 cm * 10 = 1700 cm.
Step 2: Calculate the total height of 9 boys. If one boy's height is neglected, the average height increases by 1 cm to 171 cm. So, the total height of the remaining 9 boys is 171 cm * 9 = 1539 cm.
Step 3: Find the height of the neglected boy. Subtract the total height of the 9 boys from the total height of the 10 boys. 1700 cm - 1539 cm = 161 cm.
So, the height of the neglected boy is 161 cm.
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