Express the Sum Using Summation Notation $$\frac { 6 } { 7 } + \frac { 7 } { 8 } + \frac { 8 } { 9 } + \frac { 9 } { 10 } + \ldots + \frac { 19 } { 20 }$$

question 64

Multiple Choice

Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of
summation.
- $$\frac { 6 } { 7 } + \frac { 7 } { 8 } + \frac { 8 } { 9 } + \frac { 9 } { 10 } + \ldots + \frac { 19 } { 20 }$$

• A) \(\sum _ { k = 7 } ^ { 19 } \frac { k } { k + 1 }\)
• B) \(\sum _ { k = 7 } ^ { 19 } \frac { k + 1 } { k }\)
• C) \(\sum _ { k = 6 } ^ { 19 } \frac { k } { k + 1 }\)
• D) \(\sum _ { \mathrm { k } = 6 } ^ { 19 } \frac { \mathrm { k } + 1 } { \mathrm { k } }\)

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Definitions:

Cost of Goods Sold

represents the direct costs attributable to the production of the goods sold by a company, including materials and labor.

Predetermined Overhead Rate

A rate used to allocate manufacturing overhead costs to products or job orders, calculated before the period begins based on estimated overhead costs and activity levels.

Cost of Goods

The total cost of manufacturing or acquiring a product or service that is sold to customers.

Machine-Hour

A measure of production or operation time where costs are allocated based on the number of hours a machine is operated.