Which equation can be used to answer the question; 45 is 90% of what number? *
45 = 90% X W
45 = 90% / w
90% = 45 x w
90% = w/ 45

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Can anyone explain to me how to do this? anything will .