Question

A pack contains 12 sharpeners mary bought no pack but 5 sharpeners separately what is the total number of sharpeners she bought​

Answer 1

Step-by-step explanation:

Suppose one eraser, one sharpener and one pencil cost e,s and p rupees respectively.

Given:

5e+7s+9p=100 ........... (1) and 2e+6s+10p=80 ........... (2)

So, from (2)

e+3s+5p=40 ⟹ e=40−3s−5p

Substituting in (1) we get,

5(40−3s−5p)+7s+5p=40 by solving we get s=10−2p ......... (3)

Substitute in (2) we get,

e−p=10 ........... (4)

Adding (3) and (4) we get,

e+s+p=20.

Hence, option C is correct

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Answer 2

Answer:

The total number of sharpeners she bought is 5 sharpeners.