1.

Rohit bought 12 registers for Rs 156, find the cost of 7 such registers.

Answer»

Let the cost of 7 registers is Rs x

No of registers127
Cost (Rs)156x


\(\frac{12}{156}\) = \(\frac{7}{x}\)

On cross multiplication, we get

12x = 7 x 156

x = \(\frac{7\times 156}{12}\) = 91

Therefore cost of 7 registers is Rs 91



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