Question

By selling a toy for Rs 990 Maria makes a profit of 10% and by selling a calculator for rupees 990 she suffers a loss of 10% calculator total CP total SP overall loss percent or gain percent

Answer 1

Given:

By selling a toy for Rs 990 Maria makes a profit of 10%

By selling a calculator for rupees 990 she suffers a loss of 10%

To find:

Total C.P., Total S.P. and overall loss per cent or gain per cent

Solution:

Finding total S.P.:

The S.P. of a toy = Rs. 990

and

The S.P. of a calculator = Rs. 990

∴ Total S.P. = Rs. 990 + Rs. 990 = Rs. 1980

Finding total C.P.:

We have the formula as:

$\boxed{\bold{C.P. = S.P.\times [\frac{100}{100+-(G\% \:orL\%)} ]}}$

∴ Total C.P. is,

= $[990\times (\frac{100}{100+10} )] + [990\times (\frac{100}{100-10} )]$

= $[990\times (\frac{100}{110}) ] + [990\times (\frac{100}{90}) ]$

= $Rs.\:900 + Rs. 1100$

= $\underline{\bold{Rs.\:2000}}$

Finding overall loss per cent or gain per cent:

Since the total C.P. is more than total S.P., so Maria will suffer an overall loss in the transaction.

∴ The loss percentage is,

= $\frac{C.P. - S.P. }{C.P.} \times 100$

= $\frac{2000 - 1980 }{2000} \times 100$

= $\frac{20 }{2000} \times 100$

= $0.01 \times 100$

= $\underline{\bold{1 \%}}$

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Answer 2

Step-by-step explanation:

Here ur solution

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