Question

For a class copies of 9 maths books and 16 science
books cost Rs.220. Each book costs a whole number
of rupees. Find the cost of each maths book.​

Answer 1

Answer:

cost of each maths book = Rs 12

Step-by-step explanation:

Let say Math book Cost  = M rs

& Science book Cost  = S Rs

9 Maths book Costs = 9M  Rs

16 Science book Costs  =  16S  Rs

Total Cost = 220

=> 9M  + 16S  =  220

M = 12   & S  = 7   satisfies this

9 * 12 + 16 * 7 - 108 + 112 = 220

cost of each maths book = Rs 12