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If from three annual checkups a person mean height is 62 in on the first two was 58 in and 61 in what was his height at the third checkup?
Rbrowne99
1. Set up the equation
58 + 61 + a = 62
3
2. Get rid of the fraction by multiplying by 3
3(58 + 61 + a) = (62 ) 3
3
This is your little math
3(58) = 174 → 174 ÷ 3= 58
3(61) =183 → 183÷3= 61
3a → 3a÷3= a
3(62) = 186
3. After get rid of the fraction, you'll get this equation
58+61+1a= 186
119+1a= 186
-119 -119
1a= 67
1a= 67
1 1
A= 67 in.
The third checkup height is 67 in. ♥
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∙ 13y ago
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