The cost of one pencil, two pens and four erasers is Rs.22 while the cost of five pencils, four pens and two erasers is Rs.32.How much will three pencils, three pens and three erasers cost?
Submitted by: AdministratorLet a, b, and c denote pencil, pen and eraser respectively.
Given that the cost of one pencil, two pens and four erasers is Rs.22
This can be written as,
a + 2b + 4c = 22 ..........(1)
Similarly, the cost of 5 pencils, 4 pens and 2 erasers is Rs. 32
This implies ....
5a + 4B + 2c = 32 ......... (2)
Adding (1) and (2), we get
6a + 6b + 6c = 54
We need to find the value of 3a + 3b + 3c.
Dividing by 2, we get
3a + 3b + 3c = 27.
Hence, the cost of 3 pencils, 3 pens, and 3 erasers is Rs.27
Submitted by: Administrator
Given that the cost of one pencil, two pens and four erasers is Rs.22
This can be written as,
a + 2b + 4c = 22 ..........(1)
Similarly, the cost of 5 pencils, 4 pens and 2 erasers is Rs. 32
This implies ....
5a + 4B + 2c = 32 ......... (2)
Adding (1) and (2), we get
6a + 6b + 6c = 54
We need to find the value of 3a + 3b + 3c.
Dividing by 2, we get
3a + 3b + 3c = 27.
Hence, the cost of 3 pencils, 3 pens, and 3 erasers is Rs.27
Submitted by: Administrator
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