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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Let the cost of the pen=x Then the cost of the notebook will be x+5 Acc. to the question- 4x + 5(x+5)=88 = 4x + 5x + 25=88 = 9x = 88-25 = 9x = 63 = x = 63/9 =7

So cost of one pen is Rs.7 and 1 note. is x + 5=Rs.(7+5)= Rs. 12

Let, cost of one pen = a
cost of a notebook = a+5
ATQ,
4a + 5(a+5)= 88
4a + 5a +25 = 88
9a = 88- 25 = 63
a = 63/9 = 7
Hence, cost of one notebook is 12 rs.
cost of one pen is 7 rs.