L&T Company Numerical Ability Simple & Compound Interest

Difference between the compound interest and the simple interest accrued on an amount of Rs. 18000 in two year is Rs. 405. What was the rate of interest?
1) 14%
2) 16%
3) 12.5%
4) 15%
5) 15.5%

Read Solution (Total 2)

C.I -S.I =P(R/100)^2
405=18000(R^2/10000)
(405*10000)/18000=R^2
R^2=225
Ans R=15%
7 years agoHelpfull: Yes(8) No(1)

C.I-S.I=(PR^2)/100^2
R=15%
7 years agoHelpfull: Yes(2) No(0)

L&T Other Question

A rectangular plot has a concrete path running inner side of the plot is used as a lawn, which has an area of 432 sq.m. If the width of the path is 4 m and the length of the plot is greater than its breadth by 2m, what is the area of the rectangular plot?
1) 980 m^2
2) 975 m^2
3) 984 m^2
4) 960 m^2
5) 965 m^2
12 men can complete any work in 36 days. 18 women can complete the same piece of work in 60 days. 8 men and 20 women work together for 20 days. If only the women were to complete the remaining work in 4 days, then how many women would be required?
1) 60
2) 74
3) 68
4) 75
5) 70