The speed of a stream is 2 km/ hr. A boat goes 32 km. and comes back to the starting point in 12 hours. What is the speed (in km/h

1 thought on “The speed of a stream is 2 km/ hr. A boat goes 32 km. and comes back to the starting point in 12 hours. What is the speed (in km/h”

1. Step-by-step explanation:

   [tex]\huge\bold\red{Answer}[/tex]

   ᴜᴘsᴛʀᴇᴀᴍ sᴘᴇᴇᴅ= (6 – 2) = 4 ᴋᴍᴘʜ

   ᴅᴏᴡɴsᴛʀᴇᴀᴍ sᴘᴇᴇᴅ = (6 + 2) = 8 ᴋᴍᴘʜ

   ᴜᴘsᴛʀᴇᴀᴍ ᴛɪᴍᴇ = 32/4 = 8 ʜᴏᴜʀs

   ᴅᴏᴡɴsᴛʀᴇᴀᴍ ᴛɪᴍᴇ = 32/8 = 4 ʜᴏᴜʀs

   ᴛᴏᴛᴀʟ ᴛɪᴍᴇ = 8 + 4 = 12 ʜᴏᴜʀs

   ᴀʟᴛᴇʀɴᴀᴛᴇ ᴍᴇᴛʜᴏᴅ :

   ᴜᴘsᴛʀᴇᴀᴍ sᴘᴇᴇᴅ= (6 – 2) = 4 ᴋᴍᴘʜ

   ᴅᴏᴡɴsᴛʀᴇᴀᴍ sᴘᴇᴇᴅ = (6 + 2) = 8 ᴋᴍᴘʜ

   ᴀᴠᴇʀᴀɢᴇ sᴘᴇᴇᴅ ғᴏʀ ᴡʜᴏʟᴇ ᴊᴏᴜʀɴᴇʏ

   = 2 x 4 x 8 / ( 4 + 8 ) = 5 ⅓ ᴋᴍᴘʜ

   => ᴛᴏᴛᴀʟ ᴛɪᴍᴇ = 64/5 ⅓ = 12 ʜᴏᴜʀs

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