The ratio of the monthly income of Radhey and Ranu is 12 ∶ 9 and tha

1.	The ratio of the monthly income of Radhey and Ranu is 12 ∶ 9 and that their expenditure is 11 ∶ 7 if each of them saves Rs. 18,000 per month, then find the sum of monthly incomes of Radhey and Ranu? (in Rs.)1. Rs. 1,00,8002. Rs. 1,26,0003. Rs. 1,25,0004. Rs. 1,29,000
Answer» Correct Answer - Option 1 : Rs. 1,00,800 Given: The ratio of the monthly income of Radhey and Ranu = 12 ∶ 9 The ratio of their expenditure = 11 ∶ 7 Saving of each of them = Rs. 18,000 Formula used Income = Expenditure + Saving Calculations: Let the income of Radhey and Ranu be 12x and 9x Expenditure of Radhey = 12x – 18000 Expenditure of Ranu = 9x – 18000 According to the question, ⇒ (12x – 18000)/(9x – 18000) = 11/7 ⇒ 84x – 126000 = 99x – 198000 ⇒ 15x = 72000 ⇒ x = 4800 The total income of Radhey and Ranu = 12x + 9x = 21 × 4800 = Rs. 1,00,800 ∴ The total income of Radhey and Ranu is Rs. 1,00,800

The ratio of the monthly income of Radhey and Ranu is 12 ∶ 9 and that their expenditure is 11 ∶ 7 if each of them saves Rs. 18,000 per month, then find the sum of monthly incomes of Radhey and Ranu? (in Rs.)1. Rs. 1,00,8002. Rs. 1,26,0003. Rs. 1,25,0004. Rs. 1,29,000

Answer» Correct Answer - Option 1 : Rs. 1,00,800

Given:

The ratio of the monthly income of Radhey and Ranu = 12 ∶ 9

The ratio of their expenditure = 11 ∶ 7

Saving of each of them = Rs. 18,000

Formula used

Income = Expenditure + Saving

Calculations:

Let the income of Radhey and Ranu be 12x and 9x

Expenditure of Radhey = 12x – 18000

Expenditure of Ranu = 9x – 18000

According to the question,

⇒ (12x – 18000)/(9x – 18000) = 11/7

⇒ 84x – 126000 = 99x – 198000

⇒ 15x = 72000

⇒ x = 4800

The total income of Radhey and Ranu = 12x + 9x = 21 × 4800 = Rs. 1,00,800

∴ The total income of Radhey and Ranu is Rs. 1,00,800

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