24. Razor blades are quoted at German port at 490 DM per kg. Find the imported cost of blades per gross, being given that £1 = 3.91DM,
Re1 = £0.044, 1 kg 15400 grains, weight of blade = 3.2 grains,
average cost of transport, insurance, customs etc. Rs 26.81 per gross​

stop cheating

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.