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5 pencils and 7 pens together …

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5 pencils and 7 pens together cost 50Rs,whereas 7 pencils and 5 pen together cost 46Rs. FIND THE COST OF 1 PENCIL AND THAT OF 1 PEN(Form the pair of linear equations and find the solution graphically)I NEED BRIEF EXPLANATION FOR THIS QUESTION!!!!!

Posted by Aishwarya Vishwakarma 5 years, 4 months ago

CBSE > Class 10 > Mathematics

4 answers

Rahul Kamat 5 years, 4 months ago

Sorry solve graphically

1Thank You

Rahul Kamat 5 years, 4 months ago

Find the value of x and y

0Thank You

Rahul Kamat 5 years, 4 months ago

Then A/q 5y +7x = 50 rs.----- (1) And 7y+5x= 46 rs.------(2) Solving eq. 1 and 2 by elimination method

0Thank You

Rahul Kamat 5 years, 4 months ago

Let the cost of pencil be 'y' Rs. And that of pen be 'x' Rs.

0Thank You

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CBSE > Class 10 > Mathematics