Ana is a girl and has the same number of brothers as sisters. Andrew is a boy and has twice as many sisters as brothers. Ana and Andrew are the children of Emma. How many children does Emma have?	Choose the correct choice from the following options:
A) 2
B) 3
C) 5
D) 7
E) 8
no of girls X   no of boys Y   x-1 = y   y-1 = 2x   multiple first with 2   2x-2= 2y   y-1 -2 = 2y =&gt; y=3 ignore sign   put in 1 x= 4   total 7   ANSWER:7
<result>D</result>
Ana is a girl and has the same number of brothers as sisters. Andrew is a boy and has twice as many sisters as brothers. Ana and Andrew are the children of Emma. How many children does Emma have?