If a commission of 20% is given on the written price, the gain is 60%.
If a commission of 20% is given on the written price, the gain is 60%. What will be the percentage of gain if the commission is increased to 25%?
If a commission of 20% is given on the written price, the gain is 60%. What will be the percentage of gain if the commission is increased to 25%?
Nithin K ? Apr 2 '2018 at 21:37
Answer is : 0.5
Explanation:
Let the written price = Rs.100
commission = Rs.20
selling price = 100-20 = Rs.80
gain = 60%cost price =80×100160= Rs.50
if the commission is increased to 25%,
selling price = 100-25 = Rs.75
new gain =(75−50)×10050=50%= 0.5
Anil sells two houses at the same prices. On one he makes a profit of 10% and on the other he suffers a loss of 10%. Select the correct statement.
Nithin K ? Apr 2 '2018 at 21:5
Answer is : He suffers a loss of 1%
Explanation:
In this type of transaction, there is always a loss
Loss percent =(x2100) =[(10×10)100]= 1%
In an examination, 65% of the total examinees passed. If the number of failures is 420. The total number of examinees are
Nithin K ? Apr 2 '2018 at 20:15
Answer is 1200
Explanation:
Percentage of failures = (100 − 65)% = 35%
Let the total number of examinees be x.
Then,
35% of x=420⟹35100×x=420
⟹x=[420×10035]=1200
A can do a piece of work in 18 days. B in 27 days and C in 36 days. They start working together but only C works till the completion. A leaves 7 days and B leaves 8 days before the completion of work. The whole work was completed in
prashanth ? Dec 7 '2018 at 12:11
Answer is: [C] 14 days
Explanation:
A can do a piece of work in 18 days,--------A's rate is 1/18 job/day
----------------------
B in 27 days -------------------------------B's rate is 1/27 job/day
C in 36 days.-------------------------------C's rate is 1/36 job/day
------------------------------------------------------------------------All of them began together but A left 7 days and B left 8 days before the completion of the work. How many days in all did C put in till the entire work was finished?
--------------
Equation:
Let x be the number of days required to do the job:
(x-7)(1/18)+(x-8)(1/27)+x(1/36) = 1 job(2x-14+x)(1/36)+(x-8)(1/27) = 1 job
3(3x-14)+4(x-8)(1/108)=1 job
(9x-42+4x-32)/(108) = 1 job
(13x-74)= 108
13x = 182
x = 14
A man lends Rs.1200 for 3 years. Apart he lends on 4% and rest on 6% and receives Rs.192 as interest. The money he lent on 6% rate is
Nithin K ? Apr 1 '2018 at 23:51
Answer is :Rs.800
Explanation
If amount lend at 4% interest = x
and at 6% interest = 1200 -x
Given, (x×3×4100)+((1200−x)×3×6100)=192=>12x100+21600100−18x100=192
=>12x+21600−18x100=192=>−6x+21600100=192
=>21600−6x=19200
=>6x=21600−19200
=>6x=2400
=>x=400
∴
= 1200 - 400
=800
A sum of money at simple interest doubles in 7 years. It will be come four times in
Nithin K ? Apr 1 '2018 at 23:24
Answer is : 21 years
Explanation:
let amount be x.
Case 1 : amount becomes 2x => simple interest = x
Case 2 : amount becomes 4x => simple interest = 3x
SI= \frac{P \times R \times T}{100}
i.e., SI ∝ T (when Rate of interest is constant)
x ∝ 7
3x ∝ n
\frac{x}{3x} = \frac{7}{n}=> \frac{1}{3}=\frac{7}{n}
=> n = 7 \times 3
n = 21 years
If MISTAKE is coded as 9765412 and NAKED is coded as 84123, how are the following words coded?
STAIN
Nithin K ? Mar 31 '2018 at 10:3
Answer is : 65478
Explanation:
The alphabets in the given words are coded as follows :
M I S T A K E N D 9 7 6 5 4 1 2 8 3 S is coded as 6,
T as 5,
A as 4,
I as 7 and
N as 8.
So, STAIN is coded as 65478.