MBA Exam

If the sum of the first ‘n’ terms of an Arithmetic Progression is 100 and the
sum of the next ‘n’ terms of the Arithmetic Progression is 300, then what is the
ratio of the first term and the common difference?

1) 2:1
2) 1:2
3) 1:3
4) cbd

Read Solution (Total 1)

Sn = 100
S2n = 100+300 = 400

put n = 1
s1 = t1 = 100 = a

s2n = s2 = 400 = t2+t1
t2 = 400 - t1 = 300
t2 = t1+d
d = 300-100 = 200

a/d = 100/200 = 1:2
7 Months agoHelpfull: Yes(0) No(0)

MBA Other Question

If p th, q th and r th terms of a G.P be a, b, c respectively, then find the value of a (q â€“ r)b (r â€“ p)c( p â€“ q)?

1) 0
2) 1
3) -1
4) None of these
There are 5 duplicating machines in an office..the fastest of the machines take P copies in 10 hours and the slowest of the machine makes P copies in 11 hours..If each machine makes p copies then the average time cannot be???CAT 1996

1) 10.7hrs
2) 10.2hrs
3) 10.1hrs
4) 10.5hrs