exam Maths Puzzle Numerical Ability

please help me solve these question 120% of y is 42

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exam Other Question

A plane flies 500 miles with the wind and 340 miles against the wind in the same length of time. If the speed of the wind is 28mph, what is the speed of the plane in still air? I need help hope you can on this one....Please help me :)
Page 173 Number 28

number line starts at --5 -4.5 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 x

Now I have to translate the g