Start learning 50% faster. Sign in now
ATQ, Let monthly expenditure of ‘Ankita’ and ‘Mamta’ is Rs. ‘9a’ and Rs. ‘5a’ respectively. And, monthly savings of ‘Ankita’ and ‘Mamta’ is Rs. ‘7b’ and Rs. ‘4b’ respectively. So, 9a + 7b = 21300......................(1) And, 5a + 4b = 12000......................(2) Solving equation (1) and (2), we get; a = 1200 and b = 1500 Monthly expenditure of ‘Ankita’ = 9 × 1200 = Rs. 10800 Monthly savings of ‘Mamta’ = 4 × 1500 = Rs. 6000 Required percentage = [(10800 – 6000)/6000] × 100 = 80%
Which of the following statements for the given chemical reaction is true?
Fe2O3 + 2Al
Natural radioactivity was discovered by
Which of the following materials is a good insulator?
Which of the following is not a simple machine?
Atomic size refers to the _______ of an atom.
The part of leaf by which it is attached to the stem is called ______.
A car accelerates from rest at a uniform rate of 2 m/s² for 10 s. What is the total distance traveled?
Which of the following gas is used in the preparation of the bleaching powder?
Which state does not share a common border with Haryana?
Which colour is the complementary colour of yellow?