exam Maths Puzzle Numerical Ability

A number between 300 and 400. If it is divided by 2, the remainder is 1. If it is divided by 4,6, or 8, the remainder is 3. If it is devied by 10, the remainder is 5. If t divided by 3,5,7, or 9, the remainder is zero. What is the number?

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exam Other Question

A line passing through (-8, 2) and (-1,y) is perpendicular to a line with slope -7/5. Find the value of y.

I worked it out to be y=7.

Is this correct?

Thanks so much! Solve the following systems by substitution. Example 2 (p 712) and Example 4 (p 713) are the key models to go by for solving these exercises�.

16) 5x - 2y = -5
y - 5x = 3