exam Maths Puzzle Numerical Ability

A electronics store wants to order at least 3 times as many DVD players as VHS players. Write an inequality expressing this relationship.

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exam Other Question

3x+y=13

x+6y=-7 The diameter of the Milky Way disc is approximately 9 x 10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way?

900