A and B together have $100. If 3/10 of A's amount is equal to 1/5 of B's amount, how much amount does B have?  Options:
A) $60  B) $55  C) $42  D) $31  E) $100
3/10 $60 = 1/5 B   $60 = 1/5 * 10/3 B   $60 = 2/3 B   $60/B = 2/3   $60:B = 2:3   B's share = 100*3/5= 
<gadget id="calculator">100*3/5</gadget>
<output>60</output>
$60   $60nswer is $60
<result>A</result>
A and B together have $100. If 3/10 of A's amount is equal to 1/5 of B's amount, how much amount does B have?