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These resources are designed to help you familiarize yourself with the exam format, identify key topics, and practice effectively. Whether you're preparing for the May/June or GCE sessions, our curated materials provide both objective and theory questions to enhance your study sessions.","tags","waec nigeria west africa examination council","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",10,"createdOn",1755991949910,"updatedOn","questionsCount",27220,"courseCount",23,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"3gW6EsYSNLaTbxXq8S5OzgUGiUTHq4","q","The four interior angles of a quadrilateral are (x + 20) ^o, (x+ 10) ^o (2x - 45) ^o and (x - 25) ^o. Find the value of x","ans",[414],1,"2003","course","mathematics","exp","Sum of interior angles in a quadrilateral is 360
\n(x + 20)^o + (x+ 10)^o + (2x - 45)^o + (x - 25)^o = 360^o
\n5x^o - 40^o = 360^o
\nx = 400/5 = 80^o","opts",[422,423,424,425],"60","80","100","360",22,"22","initComment","initReply","actionData","errors"]

WAEC - Mathematics (2003 - No. 22)

Explanation

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