Question

class 7
chapter: simple linear equation and unitary method
please fast​

Answer 1

Answer:

a) 5/2 a = 20

5 a = 20 × 2

5 a = 40

a = 40/5

a = 8

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b) 4×6 = x × 4

24/4 = x

6 = x

hence, 6 person will do it in 4 days.