Question
X spends 45% of his salary and saves the remaining.
After his salary is increased by 15%, he saves 45% of the increased amount besides the amount he used to save earlier. What will be the percentage change in his monthly savings?Solution
⇒ Let his salary be Rs. 100 ⇒ His expenditure = 45% of 100 = Rs. 45 ⇒ His saving = Rs. (100 – 45) = Rs. 55 ⇒ Salary increased by 15% ⇒ New salary = Rs. (100 × 115)/100 = Rs. 115 ⇒ saving on increased amount = Rs. 45% × 55 = Rs. 24.75 ⇒ New Saving = Rs. (55 + 24.75) = Rs. 79.75 ⇒ required increase in saving = (79.75 – 55)/55 × 100 ∴ required increase in saving = 45%
Which law explains why passengers move forward when a moving bus stops suddenly?
Which of the following is an example of a plant which reproduce through its buds?
Zinc metal liberates hydrogen gas on reaction with dilute HCl, but hydrogen gas is not liberated, when zine is reacted with nitric acid. What is the rea...
Supersonic speed is speed greater than the speed of sound (in air at sea level) that is to say around______ miles/hour.
Coffee, spinach, onion and tea in our diet mostly provide us with which of the following elements as food?
Which of the following statement is/are true?
I. Acids are sour in taste
II. Bases are bitter in taste
Name the gas evolved when ethanoic acid is added to sodium carbonate?
What is the name of China's recently launched largest amphibious assault vessel?
Which of the following is present in the nucleus of an atom?
Who is known the father of modern chemistry?
