In a bag of 72 red and green marbles, 5/9 are green. What is the number of red marbles in the bag?
72 cards5/9 are green = 72/(5/9) = 40 green marbles72 - 40 = 32 red marbles
VS
Related Maths GCSE answers
All answers ▸The Tour de France is 2162miles long. A cyclist knows his average speed his 12.37 miles/hour from his previous races. For the Tour de France the cyclist knows he will cycle for 10 hours a day. Estimate how many days it will take him to complete the race.
Make x the subject of the formula: 3(2x-y)=ax-4
How do I find the volume of a sphere?
Solve the simultaneous equations: y = 4x^2 - 9x - 1 and y = 5 - 4x