Question
The cost of 10 pencils and 12 pens is 150. What is the cost of 30 pencils and 36 pens?
Solution
If 10 pencils +12pens =150. 30 pencils +36pens =3(10 pencils +12pens) =3Γ150=450.
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Question
If 10 pencils +12pens =150. 30 pencils +36pens =3(10 pencils +12pens) =3Γ150=450.