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ICSE Class 9 Answered

3 books and 2 pen₹30 4 books and 1 pen₹ 90 Find the cost of each
Asked by devalakshmis2017 | 28 Jun, 2019, 07:23: PM
answered-by-expert Expert Answer

3 books and 2 pen₹30

4 books and 1 pen₹ 90

Hint
 
Assume the cost of book as 'x' and that of pen as 'y'.
Form the respective equations from the given information.
 
3x + 2y = 30
4x + y = 90
 
Solve for 'x' and 'y'.
 
 
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