#### Answer

Total salary paid by company A over a period of 10 years
= 307000
Total salary paid by company B over a period of 10 years
= 324000
Company B pay greater total amount .

#### Work Step by Step

Company A offer starting salary = 19000
Company A offer raise in salary per year =2600
Company A offer salary after 10 year = 19000 + (10- 1) $\times$2600
= 19000 + 9$\times$2600
= 19000 + 23400
= 42400
Total salary paid by company A over a period of 10 years
= $\frac{10}{2}$(19000 +42400)
= 5$\times$61400 = 307000
Company B offer starting salary = 27000
Company B offer raise in salary per year =1200
Company B offer salary after 10 year = 27000 + (10- 1) $\times$1200
= 27000 + 9$\times$1200
= 27000 + 10800
= 37800
Total salary paid by company B over a period of 10 years
= $\frac{10}{2}$(27000 +37800)
= 5$\times$64800 = 324000
Company B pay greater total amount .