A student gets 60% in one subject, 70% in the other. To get an overall of 70% how much should get in third subject. Select.
A) 75%	B) 80%	C) 45%	D) 55%	E) 65%
Let the 3rd subject % = x   60+70+x = 3*70   130+x =210   x = 210-130= 
<gadget id="calculator">210-130</gadget>
<output>80</output>
80   Answer :80%
<result>B</result>
A student gets 60% in one subject, 70% in the other. To get an overall of 70% how much should get in third subject.