Question

devwart babu 6 mahine ki aaye se 7 mahine ka khrch chalate hai .unka masik khrch 12270 rs hai to unka 1 mahina ka aye kitna hoga. btaye
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Answer 1

Given sp=220 and loss=12%

so, the CP = (220*100)/88 =250 Rs

now the new profit is 10% and cp is 250 Rs

and we have to find by how much amount as compared to earlier the SP will be more so as to gain profit of 10%.

so SP= (250*110)/100 =275 Rs

now increase in amount= 275–220 = 55 Rs

Answer 2

1 month's salary of Devwart babu is Rs. 14315

Given,

6 months' salary = 7 month's expense

1 month's expense = Rs. 12270

To Find,

1 month's salary.

Solution,

∵ 1 month expense = Rs. 12270

⇒ 7 months expense = Rs. 12270 x 7

                                  = Rs. 85890

⇒ 7 months expense = 6 months salary

⇒ 6 months salary = Rs. 85890

⇒ 1 month salary = Rs. 85890/6

                             = Rs. 14315

Therefore, 1 month's salary of Devwart babu is Rs. 14315

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