Question

24 workers can build a wall in 15 days.How many days will 9 worker take a build a simular wall?

Answer 1

Answer: 40 days

Step-by-step explanation:

24 workers === 15 days === 1 wall

24 workers === 1 day ==== 1/15 part of wall

1 worker ====     1 day ===== 1/15*24 part of wall

9 workers ==== 1 day == 9/15*24 part

1 day = 9/15*24 part

x days = 1 part

x = 15*24/9 = 40 days

ALTERNATE:

M1 * D1 = M2 * D2

24*15 = 9 * D2

D2 = 24*15/9 = 40 days

Answer 2

Answer:

40

Step-by-step explanation:

given,

        24 workers can build a wall in 15 days

then,  no of days taken by 1 worker = 24*15

                                                            = 360 days

therefore , no of days taken by 9 workers = 360/9

                                                                       = 40 days

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