In a caravan, in addition to 50 hens there are 45 goats and 8 camels with some keepers. If the total number of feet be 224 more than the number of heads, find the number of keepers.
A
15
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B
16
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C
17
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D
19
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Solution
The correct option is A15
Let x be the number of keepers.
Total number of heads of 50 hens, 45 goats ,8 camels and x keepers =50+45+8+x=103+x
Total number of legs of 50 hens =100
Total number of legs of 45 goats =180
Total number of legs of 8 camels =32
Total number of legs of x keepers =2x
Total legs = 100+180+32+2x=312+2x Total number of feet is 224 more than 312+2x