Question

Please answer my questions correctly
don't answer wrong for gaining the point ​

Answer 1

Answer:

Q7.

1)SP=1980

2)CP=1800

Q8

1)43.4%

2)84%

3)92%

Q9.

20% loss

Q10.

CP=450

Loss percent=10%

Q11.

profit/gain =600 rs

CP=3000 rs

Gain percent=20%

Step-by-step explanation:

Question 7.

Marked price=2250

SP= Mp*(discount/profit)=2250*0.88=1980

Now SP=CP*(discount/profit)

        1980=CP*1.1

        Cp=1800

Question 8.

for successive discount A% and B% use the formula A+B-$\frac{AB}{100}$

1) here we are given 3 consecutive discount so we will first calculate for 10% and 20% and then result(equivalent )of these two will be calculated with third one

So for 10 and 20% final discount percent as per the formula will be

$10+20-\frac{10*20}{100}\\ =28$

Now this 28% will be calculated with 20% again to find whole equivalent of all 3 in the same manner as shown above

$28+20-\frac{28*20}{100}$

=48-5.6

=43.4%

2)

Using the same formula again

$60+60-\frac{60*60}{100}$

=120-36

=84%

3)

equivalent percentage =$60+80-\frac{60*80}{100}$

                                       =140-48

                                        =92%

Question 9

15SP=12CP

Now we know SP/CP = profit if the ratio is greater than 1

                                    =loss if the ratio is less than 1

SO,SP/CP=12/15=0.8=20%loss

Question 10.

SP=405

person losses 1/10 of CP

that means SP= 9/10 CP

so 405=9/10CP

Cp=450

loss= 45 rs and loss percent = $\frac{45}{450} *100$ =10%

Question 11.

SP=3600

profit/gain =1/6SP=$\frac{3600}{6}$=600 rs

CP= SP- gain=3600-600=3000

Gain percent =$\frac{600}{3000}*100$=20%