Question

four erasers are purchased for rs. 10 find the cost of one dozen erasers

Answer 1

1 dozen erasers = 12 erasers.

If 4 erasers are worth ₹10,

12 erasers would be worth - ₹10 × 3 = ₹30.

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Answer 2

If four eraser costs 4  So ,1 eraser costs 10/4=2.5            1 dozen =12pices 2.5×12=₹30 Hope it's help