The total cost of 1 copy and 2 pencils is 10 rupee. How many non zero integral solutions are possi

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14 Oct 2010 Possible solution?

The total cost of 1 copy and 2 pencils is 10 rupee. How many non zero integral solutions are possible
for the cost of a copy and a pencil.

OPtion

1) 4
2) 3
3) 2
4) 1
5) 5
6) 6
7) 7
8) 8
9) 9
10) 0

Solution

Solutions are (2,4), (4,3), (6,2), (8,1)

Correct Option: 1 Best Solution (9)

Dr.Dipin Singh   13 years AGO

The total cost of 1 copy and 2 pencils is 10 rupee. For integral non zero solutions, cost of copy can have only 4 even values i.e. 2,4,6,8. Hence 4 non zero integral solutions are possible
for the cost of a copy and a pencil.

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A.P.Singh   13 years AGO

For non zero integral solutions, cost of copy can not be odd or zero. Hence possible values are 2,4,6,8 and corresponding costs of pencils are 4,3,2,1 . so 4 solutions are possible.

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Meena   13 years AGO

2-4, 4-3, 6-2, 8-1 are four non zero integral possible solutions.

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Bawa   13 years AGO

cost of copy can be even no like 2,4,6,8 only. so 4 solutions only in given case .

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S. Singh   13 years AGO

The total cost of 1 copy and 2 pencils is 10 rupee. means
1*c +2*p=10 or p =(10-c)/2; For integral non zero values of p, c can have even values only like 2,4,6,8 to have non zero integral values of P.

so 4 solutions.

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Kalidas   13 years AGO

In given conditions , cost of copy can be Rs 2, Rs 4, Rs 6, Rs 8 only.

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HARMEET KAUR   13 years AGO

2-4, 4-3, 6-2, 8-1 are possible solutions.

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Ashu   13 years AGO

copy can have values 2,4,6,8 and pencil can have corresponding values of 4,3,2,1. so 4 set of values are possible.

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Bimal   13 years AGO

The total cost of 1 copy and 2 pencils is 10 rupee. (2,4), (4,3), (6,2), (8,1 ) are four possible non zero integral solutions for the cost of a copy and a pencil.

Like? Yes (1) | No