A store display rotates 40 times every half hour. How many times will the display rotate in 4 hours?
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a store display 40 times every half hour i.e every 30 minutes
so store display 80 times in 1 hr
so in 4 hr store display 80×4 = 320 times
ans is 320
so store display 80 times in 1 hr
so in 4 hr store display 80×4 = 320 times
ans is 320
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