wpadmin/ January 11, 2019/ Blog/ 0 comments

A rectangular table can seat 8 [1+3+3+1] pupils. How many of the rectangular tables put together to form a long rectangular table could seat 50 pupils?

Please attempt the above question, timed and then click below to reveal the few second technique leading to the correct answer

Hours:Minutes:Seconds
00:00:00

Technique © :
HINT: Students / Children! Please realise the fact that the first and last tables in the long rectangular table can seat 7 (1+3+3) and 7 (3+3+1) respectively.
Step 1.  Therefore, the number of seats needed after taking away the first and last tables
50 – 7 – 7 = 36 seats

Step 2.   Now, since there can be only 6 ( 3 + 3 ) pupils per table seated in the tables between the first and the last tables, the number of tables needed other than the first and the last tables
36 / 6 = 6 tables

Step 3.   Therefore, the total number of tables needed to seat 50 pupils

1 + 6 + 1

Answer: 8 tables

Time allowed: 30 seconds

Time taken using the technique: 3 seconds

Time saved = 27 seconds [9/10th (90%) of time allowed by examiner]

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WORK SHEET – Practice question

A rectangular table can seat 6 [1+2+2+1] people. How many of the rectangular tables put together to form a long rectangular table could seat 58 people?

Technique © :

Step 1. =>

Step 2. =>

Step 3. =>

Answer: =>

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