The ratio of Fatima’s income to her savings is 4 : 1. The percentage of money saved by her is :
(a) 20%
(b) 25%
(c) 40%
(d) 80%
Income : Savings = 4 : 1. Total parts = 4 + 1 = 5. Savings = \(\dfrac{1}{5} = 20\%\).