The ratio of number of boys to that of girls in a school is 3:2.if 20% of boys and 25 % of girls are scholarship holders,find the percentage of those who are not scholarship holders. Pick one:	A) 75	B) 76	C) 77	D) 78	E) 79
since ratio be 3:2 let there is 100 students so there are 60 boys and 40 girls.so 60/40=3:2.now we find 80% of boys who are not scholarship holder so 80% of 60 is 48.now we find out 75% of girls who are not scholarship holder so 75% of 40 is 30.   so total number who are not scholarship holder is   48+30= 
<gadget id="calculator">  48+30</gadget>
<output>78</output>
78   ANSWER:78
<result>D</result>
The ratio of number of boys to that of girls in a school is 3:2.if 20% of boys and 25 % of girls are scholarship holders,find the percentage of those who are not scholarship holders.