Explanation

3 percent *20000

= (3/100)*20000

= (3*20000)/100

= 60000/100 = 600

***

ND27-12-2022

Explanation

25 ×  15 = 375

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AGM 18-12-2022

Explanation

850 masks per day number of blue masks vary 72% remainig masks 28% exclude the remainig percentage of masks from the total number of masks 850 - 28% = 238 masks other than blue colour 850 - 238 = 612 masks blue masks so the total number of blue masks produced per day is 612

Explanation

Step - 1: Let the side of the square be a

area (S1) = a^2

length of the diagonal is √(a^2+a^2)= a√(2)

Step - 2: Draw a square on its diagonal where the length of each side is a √(2)

Formula 

Hence S1:S2= (C) 1:2

****

ND10-12-2022

Explanation

Zakat is calculated as 2.5% percent on savings

80000 x 2.5%

80,000x25.5x100

2000

***

ND29-11-2022

Explanation

Divide 105 by 7 =15

in 2 rows 15+15=30

Explanation

Explanation

The cost price of 42 articles= selling price of 28 articles

let the cost price of each article = Rs X

42X= selling price of 28 articles

the selling price of each article= is 42X/28=1.5X

profit percentage= (selling price-cost price)/cost price*100

=(1,5X-X)/X*100=50

profit percentage=50%

***

Explanation

First-year get 10% 100000/100*10 = 10000

100000-10000 =90000

2nd Year get 10% 90000/100*10 = 9000

9000-90000 = 81000

ND12_8_2023

Explanation

150 40/100*150= 60