exam Maths Puzzle Numerical Ability

There are 40 cows and chicken in the farmyard. One quiet afternoon, Jack counted and found that there were 100 legs in all. How many cows and chickens are there? Solve this problem by writing and solving an equation.

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exam Other Question

Graph f(x) = –2x + 4.

please help



A=4B-3 B-A= 27