Question

vamos repartir o número 380 em parcelas que são inversamente proporcionais aos números 2, 5 e 4. Quais são essas parcelas?

Answer 1

a+b+c=380

a /380 =1/2   calculando                   2a=380

                                                                                  a=380/2 

                                                                                   a=190

b/380  =1/5                                                            5b=380

                                                                                b=380/5

                                                                                 b=76

c/380 =1/4                                            4c=380

                                                               c=380/4

                                                               c= 95