exam Maths Puzzle Numerical Ability

Television sets: What does it mean to refer to a 20-in TV set or a 25-in TV set? A 15-in TV set also has a width of 12-inches. What is its height?

I am stumped on how to set up the problem into an equation. Can someone help me?

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exam Other Question
For what value of k does the equality hold

|1 0 4 | |1 0 4|
|3 0 9 |=k|3 0 9|?
|5 5 20| |5 5 20|

a. -1
b. 0
c. 1
d. 2 The length of rectangle is fixed at 11cm. what widths will make the permeter greater than 92cm?

11x-9<-53 =?

6(3+4x)-8>154=

Please help!