From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM the rain increased to fall at a rate of 1.25 in. every two hours. How many inches of rain landed on the ground by 5:00 PM?

a) 7
b) 9.75
c) 6
d) 3.25
e) 7.125

• ans:6
  7am to 11am =2.25 inch
  11am to 1pm increase is 1.25=3.50 inch
  1pm to 3pm increase is 1.25=4.75 inch
  3pm to 5pm increase is 1.25=6 inch
  
• 11 years agoHelpfull: Yes(11) No(1)
• c) 6
  from 7am-11am, it rained 2.25 inches.
  11-1pm->2.25+1.25=3.50
  1-3pm->3.50+1.25=4.75
  3-5pm->4.75+1.25=6 ANS.
• 11 years agoHelpfull: Yes(2) No(1)
• c) 6
  from 7am-11am, it rained 2.25 inches.
  11-1pm->2.25+1.25=3.50
  1-3pm->3.50+1.25=4.75
  3-5pm->4.75+1.25=6
  so definitely 6 is a answer
• 11 years agoHelpfull: Yes(2) No(5)
• 7--11 => 4hrs =>2.25 inches
  2hrs =>2.25/2
  now in every 2hr increase rate is 1.25 therefore [(2.25/2)+1.25]=> 2.375
  11am--1pm--3pm--5pm
  here 3 sections of 2hours therefore (3*2.375) => 7.125nches
  
  s final ans is 7.125
• 10 years agoHelpfull: Yes(1) No(2)
• For 7 to 11 hrs, total rain =2.25, for next 6 hrs from 11 to 5 it rained with rate of 1.25 inches per hour, so total rain from 11 to 5 =3.75,so total rain =1.25+3.75=6
• 6 years agoHelpfull: Yes(0) No(0)