Question

40 is subtracted from 50n of a
number, the result is 30. Find the
number.​

Answer 1

n= 1.4

The number is 70

Step-by-step explanation:

50n-40= 30

50n = 30+40

50n= 70

n=70/50

n=1.4

The number = 50×n =50×1.4

= 70

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Answer 2

Step-by-step explanation:

• According to the question,
• 50n -40 = 30
• 50 n = 30+40
• n = 70/50 = 7/5 .
• So, the no. is 50n = 50*7/5 = 10*7 = 70.
• Check :
• 50n -40 = 30
• 50*7/5 -40 = 30
• 10*7 -40 = 30
• 70-40 = 30
• 30 = 30.