The income of a and b are in the ratio 3:4 and their expenditure are in the ratio 5:7.If each of them saves rupees 1000 per month,find their monthly income.simultaneous linear equation question
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Given ratio of income of a and b =3 : 4
expenditure = 5 : 7
savings = ₹1000 per month
income = 3+4
= 7 parts
expenditure = 5+7
= 12 parts
expenditure + income =savings
12 parts +7parts =₹ 1000
19 parts = ₹1000
each part = ₹1000÷ 19
= ₹52
expenditure = 5 : 7
savings = ₹1000 per month
income = 3+4
= 7 parts
expenditure = 5+7
= 12 parts
expenditure + income =savings
12 parts +7parts =₹ 1000
19 parts = ₹1000
each part = ₹1000÷ 19
= ₹52
Scientist12:
wrong answer
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