Question

Answer the question wrong answer will be get reported and her/his id will band
Question is the following
7. The internal measures of a cuboidal room are 12m x 8m x 4m. Find the total cost of
whitewashing all four walls of a room, if the cost of whitewashing is Rs.5/m2. What will be
the cost of whitewashing if the ceiling of the room is also whitewashed?

Answer 1

Answer:

(i) 2/9, 2/3, 8/21 (ii) 1/5, 3/7, 7/10

Answer:

(i) 2/9, 2/3, 8/21 = (2 * 7, 2 * 21, 8 * 3)/63 [LCM (9, 3, 21) = 63]

= (14, 42, 24)/63

= 14/63, 42/63, 24/63

Now, 42/63, 24/63, 14/63 [Arrange in descending order]

So, 2/3, 8/21, 2/9

(ii) 1/5, 3/7, 7/10 = (1 * 14, 3 * 10, 7 * 7)/70

= (14, 30, 49)/70

= 14/70, 30/70, 49/70

Now, 49/70, 30/70, 14/70 [Arrange in descending order]

So, 7/10, 3/7, 1/5

Answer 2

Step-by-step explanation:

//to calculate the selling price

class price

{

void method(int mp)

{

int d=0;

double sp=0;

if(mp>=1 &&mp<=2000)

d=0;

else if(mp>=2001 && mp<=5000)

d=4;

else if(mp>=5001 && mp<=7500)

d=8;

else

d=10;

sp=mp-(mp*d)/100.0;

System.out.println("MARKED PRICE "+mp);

System.out.println("SELLING PRICE "+sp);

}

}

$\sf{\green{\underline{\underline{\orange{Answer :-⬆}}}}}$