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05 Nov 2021, 22:33
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D
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Difficulty:
55%
(hard)
Question Stats:
50% (01:26) correct
50%
(01:28)
wrong
based on 133
sessions
History
Date
Time
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What is the cost of 10 burgers and 8 sandwich in dollars?
(1) The combined cost is less than 20$, and the cost of each is an integer dollar value.
(2) The cost of 25 burgers and 20 sandwich is 45$.
(1) The combined cost is less than 20$, and the cost of each is an integer dollar value.
(2) The cost of 25 burgers and 20 sandwich is 45$.
Updated on: 05 Nov 2021, 23:19
Originally posted by Vishal3455 on 05 Nov 2021, 22:50.
Last edited by Vishal3455 on 05 Nov 2021, 23:19, edited 1 time in total.
Last edited by Vishal3455 on 05 Nov 2021, 23:19, edited 1 time in total.
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25 burgers+20 sandwiches= 45$
5B+4S=9$
Divide by 5 both sides
Then multiply 2 both sides
10B+8S=18$
Both sufficient D answer
Posted from my mobile device
5B+4S=9$
Divide by 5 both sides
Then multiply 2 both sides
10B+8S=18$
Both sufficient D answer
Posted from my mobile device
05 Nov 2021, 23:17
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lets denote B for burgers and S for sandwiches
To find: 10B+8S= total cost??
Stat 1: combined cost is less than 20$, therefore each burger and sandwich will cost 1$ each, combined cost becomes 18$
sufficient
Stat 2: 25B+20S = 45
only possible if each costs 1$ ( note: taking non-integer values do not suffice the condition)
sufficient
Ans : D
To find: 10B+8S= total cost??
Stat 1: combined cost is less than 20$, therefore each burger and sandwich will cost 1$ each, combined cost becomes 18$
sufficient
Stat 2: 25B+20S = 45
only possible if each costs 1$ ( note: taking non-integer values do not suffice the condition)
sufficient
Ans : D
