Finding x from Two Charts

Difficulty: Medium · Topics: Probability, Statistics, Line Graphs

An estate agent's monthly house sales are shown in a line graph and in a pie chart. January's slice of the pie is a right angle.

graph "x":[-1.8,12.6],"y":[-1.1,7.5],"axes":false,"label":"Sales: January 27, February x, March 18, April 12, May 18","items":["type":"line","from":[1.786,0],"to":[1.786,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[1.786,-0.65],"text":"Jan","italic":false,"type":"line","from":[3.571,0],"to":[3.571,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[3.571,-0.65],"text":"Feb","italic":false,"type":"line","from":[5.357,0],"to":[5.357,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[5.357,-0.65],"text":"Mar","italic":false,"type":"line","from":[7.143,0],"to":[7.143,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[7.143,-0.65],"text":"Apr","italic":false,"type":"line","from":[8.929,0],"to":[8.929,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[8.929,-0.65],"text":"May","italic":false,"type":"line","from":[0,2.182],"to":[10.0,2.182],"dash":true,"ink":true,"width":0.7,"type":"line","from":[0,3.273],"to":[10.0,3.273],"dash":true,"ink":true,"width":0.7,"type":"line","from":[0,4.909],"to":[10.0,4.909],"dash":true,"ink":true,"width":0.7,"type":"line","from":[0,6.0],"to":[10.0,6.0],"dash":true,"ink":true,"width":0.7,"type":"label","at":[-0.2,2.182],"text":"12","anchor":"w","italic":false,"type":"label","at":[-0.2,3.273],"text":"18","anchor":"w","italic":false,"type":"label","at":[-0.2,4.909],"text":"27","anchor":"w","italic":false,"type":"label","at":[-0.2,6.0],"text":"x","anchor":"w","italic":false,"type":"line","from":[0,0],"to":[10.5,0],"ink":true,"end":"arrow","type":"line","from":[0,0],"to":[0,6.6],"ink":true,"end":"arrow","type":"label","at":[10.6,0.35],"text":"Month","anchor":"e","italic":false,"type":"label","at":[0.1,7.0],"text":"Sales","anchor":"e","italic":false,"type":"polygon","points":[[1.786,4.909],[3.571,6.0],[5.357,3.273],[7.143,2.182],[8.929,3.273]],"closed":false,"ink":f