NCHMCT JEE 2016 Question Paper with solutions for online practice

Let number of keeper’s in the Caravan is n
So, number of heads
= 50 + 45 + 8 + n
= (103 + n)
Number of feet
= 50 × 2 + 45 × 4 + 8 × 4 + n × 2
= 100 + 180 + 32 + 2n
= 312 + 2n
According to the question,
312 + 2n – (103 + n) = 224
n + 209 = 224
∴ n = 15
Number of keepers in the Caravan = 15.