Explanation

(x-5)/x

(x-4)/(x+1)=2/3 

2x+2=3x-12

x-12=2

x=14

10/15=2*5/(3*5)=2/3 

the origional fraction is (14-5)/14=9/14

Explanation

= 18 percent *600 

= ( 18:100)*600 

= ( 18*600):100 

= 10800:100

= 108

ND27-8-2023

Explanation

The first 5 composite numbers are 4, 6, 8, 9, 10.

composite numbers are those that can have factor other than one and itself 

Sum of first 5 composite = 4+6+8+9+10=37

Explanation

20% =20/100=1/5

Explanation

The fuel is after 4th lap is 22 and it is 18 after 7th lap the how many laps are made at the end 16

Explanation

Let total participant =X then X/4+ X/6+ X/8 + 33= X

LCM of 4,6,8 = 24 , multiply each by 24 

X/4*24+ X/6*24+ X/8 *24+ 33(24) = 24X

6x+4x+3x+792=24x

792=24x+13x

11x=792

x=792/11=72

Explanation

Ratio of wages of 6 men, 8 women and 6 = (6 x 4) : (8 x 3) : (6 x 2) = 24: 24 : 12

= 2 : 2 : 1

∴ Total money earned by children = Rs. (950 x 1/5)

= Rs. 190

total money earned by children=12*95/6 =190

Explanation

Multiply each digit of the binary number by the corresponding power of two starting from ones.

Explanation

Speed = 36 km =36*100 36*100om/3600 sec=10m/s

Distance = speed* time =10 *20 =200 m

Explanation

Lowest window install = 100/6 = 16.6

Maximum windows install =100/8 =12.5

Required answer should be greater than 12.5 but less than 16.5

which is possibly 16 hours