Question
Ajay goes to a grocery store with a certain amount of
money. He can buy 80 apples or 40 bananas with the money he has. However, he decides to save 5% of the amount for snacks and buys 10 bananas and some apples. Find the percentage of apples he can now purchase out of the initial number of apples he could have bought.Solution
ATQ Let the amount of money with Ajay be Rs. '200a' So, the price of 1 apple = (200/80) = Rs. '2.5a' Also, the price of 1 banana = (200/40) = Rs. '5a' ATQ; Amount retained for snacks = 0.05 X 200a = Rs. '10a' Price of 10 bananas = 10 X 5a = Rs. '50a' Remaining amount = 200a - 10a - 50a = Rs. '140a' So, number of apples he can purchase now = (140a/2.5a) = 56 Therefore, required percent = (56/80) X 100 = 70%
Which of the following electromagnetic waves are used for detection like Geiger tubes?
The unit of electric power is — Â
The energy stored in a stretched spring is:
Which of the following vitamins are called fat-soluble vitamins?
A closely wound solenoid 40 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 2 cm. If the current carried is 8.0 A, e...
The amount of light entering in eye is controlled by:
Which of the following decays does not change the atomic number of the nucleus?
A conducting rod of length 0.2 m is rotated with angular velocity 10 rad/s about one end in a uniform magnetic field of 0.5 T perpendicular to the plane...
Which of the following quantities is a scalar? Â