OfficialSolution:
On a particular day, three brothers, Larry, Garry, and Barry each pick apples for five hours at a constant rate of at least one apple per hour. Barry picks apples three times faster than does Larry, and half as fast as Garry does.
In the table, select for 'Apples picked per Hour by Garry' a possible number of apples picked per hour by Garry and select for 'Total apples picked by Barry' a possible number of total apples picked by Barry that would be jointly consistent with the given information. Make only two selections, one in each column.
Total Apples Picked byBarry
A. 5
B. 12
C. 18
D. 24
E. 25
Work backwards.
If Barry picks 5 apples, then his rate is 1 apple per hour, and Larry cannot pick 1/3 apples per hour. Eliminate choice A.
If Barry picks 12 apples, then his rate is 2.4 apples per hour, and Larry cannot pick 4/5 apples per hour. Eliminate choice B.
If Barry picks 18 apples, then his rate is 3.6 apples
...
On a particular day, three brothers, Larry, Garry, and Barry each pick apples for five hours at a constant rate of at least one apple per hour. Barry picks apples three times faster than does Larry, and half as fast as Garry does.
In the table, select for 'Apples picked per Hour by Garry' a possible number of apples picked per hour by Garry and select for 'Total apples picked by Barry' a possible number of total apples picked by Barry that would be jointly consistent with the given information. Make only two selections, one in each column.
Total Apples Picked byBarry
A. 5
B. 12
C. 18
D. 24
E. 25
Work backwards.
If Barry picks 5 apples, then his rate is 1 apple per hour, and Larry cannot pick 1/3 apples per hour. Eliminate choice A.
If Barry picks 12 apples, then his rate is 2.4 apples per hour, and Larry cannot pick 4/5 apples per hour. Eliminate choice B.
If Barry picks 18 apples, then his rate is 3.6 apples
...
Statistics : Posted by TetyanaRokobit • on 25 Nov 2020, 22:34 • Replies 16 • Views 6756
