Question
Who made the first attempt to calculate the national
income of India?Solution
The first attempt to calculate the national income of India was made by Dadabhai Naoroji in 1867 – 68, who estimated per capita income to be ₹ 20.
A plot has to be divided among P, Q and R in the ratio 2:3:5 respectively. If the area of plot received by R is 5200m² more than the area of plot recei...
An alloy contains copper and zinc in the ratio 5 : 3 and another contains copper and tin in the ratio 8 : 5. If equal weights of the two are melted toge...
The ratio of the lengths of rods A, B, and C is 2:3:4 respectively. Rod D is 5 cm shorter than rod C. If the difference between rod C and rod A is 20 cm...
- The mean proportional of 3 and 147 is _____.
Rahul and Tarun scored marks in the ratio 6:5. If Rahul had scored 4 marks more and Tarun had scored 5 marks less, the ratio of their marks would have b...
Ratio of males to females in village ‘A’ and village ‘B’ is 3:4 and 5:6, respectively and number of females in village ‘B’ is 25% more than ...
In 2020, the incomes of A and B were in the ratio 8:5, and their expenses were in the ratio 5:3. A’s savings in 2020 exceeded B’s savings by ₹5,00...
In a company with 800 employees, the average age of male employees is 42 years and that of female employees is 41 years. If the average age of all the e...
'X' ke paas 42 foldable laptops hain aur 'Y' ke paas 'X' se 18 zyada hain. Agar 'Y' aur 'Z' ka anupaat 5:2 hai, to Z ke paas kitne foldable laptops hain...
Determine the mean proportion of 40 and 19.6
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