Students are asked to create a record of the recital of a poem for English class in groups of three. The tape length should be 1,200 seconds. The students assigned different stanzas of the poem to each member, and the individual records were compiled. If member three took 3 times longer than member two, and member two took equal time as member one, how many seconds did member three record for his/her reading?
Pick.
A) 720	B) 240	C) 1200	D) 40	E) 500
member one, two and three as m1, m2 and m3 respectively.   m2=m1 as eq.a   m3=m2*3 as eq.b   m3+m2+m1=1,200 as eq.c   Substitute eq.b into eq. c, making (m2*3) + m2+ m2=1,200   (m2*5)/5=1,200/5 reduces to m2=240 seconds.   m3 is then m2*3, which is 720 seconds.   720nswer is 720.
<result>A</result>
Students are asked to create a record of the recital of a poem for English class in groups of three. The tape length should be 1,200 seconds. The students assigned different stanzas of the poem to each member, and the individual records were compiled. If member three took 3 times longer than member two, and member two took equal time as member one, how many seconds did member three record for his/her reading?