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Question

Q74. Ms. Cigy was to earn Rs.300 and a memento for seven weeks’ work. However, she worked for only 4 weeks and ended up earning Rs.30 and a memento. What is the value of the memento?

सुश्री सिगी सात सप्ताह के एक कार्य हेतु 300 रूपये और एक मोमेंटो पाना चाहती हैं। हालांकि उन्होंने सिर्फ 4 सप्ताह कार्य किया और केवल 30 रूपये के साथ मोमेंटो प्राप्त किया। मोमेंटो की कीमत क्या है?


A

420

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B

330

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C

240

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D

470

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Solution

The correct option is B

330


Let the value of the memento be Rs. x.

Then, pay for seven weeks’ work = Rs. 300 + x.

Pay for one week’s work = Rs. 300+x7

So, pay for four week’s work = Rs. 300+x7×4 ..(i)

Now, this is equivalent to Rs. 30 + x. ..(ii)

Equating (i) and (ii)

300+x7×4 = 30 + x

4x + 1200 = 7x + 210

3x = 990

x = Rs. 330

Hence (b) is the required answer.

माना कि स्मृति चिन्ह का मूल्य x रू. है।

तब, सात सप्ताह के काम का भुगतान = 300 रू. + x

एक सप्ताह के काम का भुगतान = 300 + x/7 रू.

इसलिए, चार सप्ताह के काम का भुगतान = 300 + x/7 रू. × 4 ............ (i)

अब, यह 30 रू. + x के बराबर है ................... (ii)

(i) और (ii) को समान करने पर

300 + x/7 × 4 = 30 + x

4x + 1200 = 7x + 210

3x = 990

x = 330 रू.

इस प्रकार (b) वांछित उत्तर है।


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