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A factory was required to produce a crtain number of television in four days. On the first day, it produced 1/6 of the required number of television sets. On the second day, it produced another 18 sets. On the third day it produced twice as many television sets as those produced on the first two days. On the fourth day, it completed the remaining 9 televison sets. How many television sets did the factory produce in the 4 days?

• maths -

Total = X sets.

1. x/6 Sets.
2. 18 Sets.
3. 2(x/6+18) Sets.
4. 9 Sets.

X = x/6+18+2(x/6+18)+9.
X = x/6+18+2x/6+36+9.
X = 3x/6+63.
X = x/2+63.
2x = x+126.
X = 126 TV sets.

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