John invested part of his savings into a investment X that earned a profit of 10% and the rest of the savings into an investment E that lost 15%. If John neither made a profit nor a loss, then what fraction of his savings was invested in investment X?	Choose the correct answer
A) a. 3/5	B) b.2/3	C) c.7/10	D) d.3/4	E) e.4/5
X(10) --- Net(0) --- E(-15) = -15/-10 = 3/2.   So, John invested 3/3+2= 
<gadget id="calculator">3/3+2</gadget>
<output>3</output>
3/5 of his savings in investment X. a. 3/5ns (a. 3/5).
<result>A</result>
John invested part of his savings into a investment X that earned a profit of 10% and the rest of the savings into an investment E that lost 15%. If John neither made a profit nor a loss, then what fraction of his savings was invested in investment X?