alleryA અને B ની આવક 5 : 4 ના ગુણોત્તરમાં છે, ખર્ચ 3 : 2 ના ગુણોત્તરમાં છે, અને દરેક રૂ. 1,600 ની બચત કરે છે. A ની આવક છે
Aરૂ. 5,000
Bરૂ. 3,200
Cરૂ. 4,800
Dરૂ. 4,000
Answer & Solution
Correct answer: D. રૂ. 4,000
આવક 5x, 4x અને ખર્ચ 3y, 2y લેતાં, 5x - 3y = 4x - 2y = 1600 ઉકેલતાં x = 800 મળે છે, તેથી A ની આવક રૂ. 4,000 છે.
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