Question

1. If 20 men assemble 8 machines in a day,how many men are needed to assemble 12 such machines per day?
(Hint): you should want to try in ratio form

2.If 3/5 quintal of rice costs rupees 180, what will be the costs of 5/6 quintal of rice?

3.A person saves rupees 12522 in one year.How much does he saves in 3,5 and 7 months?​

Answer 1

Answer:    1) 30 Men

                 2) 250rs

                3) ₹3,130.5

Step-by-step explanation:

1 )        20/8=x/12

                 5=x/6

                 x=30

2)         3/5quintal of rice costs=180rs

         5/6quintals of rice costs= (180÷3/5)×5/6

                                                  = (180×5×5)/3×6

                                                  = (10×25)rs

                                                  = 250rs

3)           A person saves rs 12522 in one year.

                          1 year = 12 month

                   12 month = ₹ 12522

                     1 month = 12522/12

                                    = 1043.5

               Acc to question

               For three month

                                            =  1043.5 × 3

                                              = ₹3,130.5

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