cost of eraser is x cost of pencil=5times more than eraser cost of book is 15+cost of pencil total cost = 48
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Answer:
Cost of eraser=23/3 or 7.6
Cost of pencil=5+X===>5+23/3====>12.6
Cost of Pen=20+X====>20+23/3===>27.6
Step-by-step explanation:
Cost of eraser =X
Pencil cost is 5times more than cost of eraser which means
Cost of pencil is 5+X
And cost of book is 15times more than cost of pencil which means
Cost of Book is 15+5+X (or) 20+X
Total cost =48
Which means X+5+X+20+X=48
3X+25=48
3X=48-25
3X=23
X=23/3
Finaly substitute value of X
Cost of eraser=23/3 or 7.6
Cost of pencil=5+X===>5+23/3====>12.6
Cost of Pen=20+X====>20+23/3===>27.6
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