Question

a person earns rupees 100.i f he spent rupees 100/7 on food and 92/3 rupees on petrol how much did he save on tha day..

Answer 1

let he saved x 

Now,

x+ 100/7 + 92/3 = 100

Taking LCM, (LCM = 21)

(21x + 300 + 644)/21 = 100


21x + 944 = 21 *100

21x + 944 = 2100

21x = 2100 - 944

21x = 1156

x= 1156/21

Then, he saved 1156/21   on that day


i hope this will help you

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Answer 2

Answer:

Let he saved x

now,

x 100/7+92/3=100

taking LCM (LCM=21)

(21x +  300 + 644)/21  =  100

21x+ 944 = 100 × 21

21x + 944 = 2100

21x = 2100-944

21x=1156

x=1156/21

Step-by-step explanation: