In a picnic 40% were boys and 18 girls
were there. Picnic site is 40km from
the school and the bus travel expenses
is ₹12/km. The total cost of
refreshments will be ₹8560.
calculate
(a)the ratio of number of girls to the number of boys in the class.
(b)the total cost/head if two teachers are also going with the class
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