A company X spent 1/5 of its investment on machinery and 1/3 of the remaining on the promotion of its product. How much fraction of the investment is the company left with after purchasing machinery and advertising?  Choose one:	A) 2/10	B) 8/15	C) 4/6	D) 3/5	E) 10/12
A company spent 1/5 of its investment on machinery, 4/5 is remaining   1/3 of the remaining investment is spent on advertising, 1/3*4/5=4/15   Total amount spent by the company for machinery and advertising is 1/5+4/15   To make the denominator common we use 15, 3/15   3/15+4/15=7/15 was the total amount spent by the company X for machinery and advertising.   Remaining is 8/15 of the investment is left with the company   Answer is 8/15
<result>B</result>
A company X spent 1/5 of its investment on machinery and 1/3 of the remaining on the promotion of its product. How much fraction of the investment is the company left with after purchasing machinery and advertising?