Others Maths Puzzle

an amount of rs 20900 is taken as loan at 9% p.a If it is to be repaid in 2 equal annual installments, then what is the value of each installment??

Read Solution (Total 2)

If Annual installment is I, then

I*(100/(100+9))^2 + I*(100/(100+109))=20900
100*I/109 (1+100/109) =20900
I*100*209/109^2=20900
I=11881
12 years agoHelpfull: Yes(4) No(3)

Total Interest for 2 years=Rs.3792. So, the total amount to be repayed= 24662.
So, to pay it in 2 equal installments,24662/2=12331.
The value of each installment = Rs.12331. Is this right??
12 years agoHelpfull: Yes(0) No(3)

Others Other Question

x! ends with k zeros; (x+3)! ends with (k+3) zeros . 0 Ritu was asked to multiply a two-digit number N by a three-digit number M. But she mistakenly multiplied N by the number formed by writing the digits of M in the reverse order, thereby getting an answer which was 22770 more than the correct answer.

1) Find the correct product of N and M, if it is known that had Ritu reversed the digits of both the numbers N and M, she would have got an answer 12816 more than her earlier answer.
A. 9982
B. 13284
C. 32752
D. 45568
E. 13842

2) What is the minimum possible sum of the digits of M?
A. 8
B. 11
C. 6
D. 5
E. 7