exam Maths Puzzle Numerical Ability

Solve by graphing;
4x+y=16
4x+y=20

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exam Other Question

A sequence in which the ratio of successive terms is a constant r, called the common ratio is a(n) ____________ sequence. a painting job can be finished in 8 painters in 23 days. if 24 painters join the team 7 days after work on the job then how many more days are required to finish the job