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Q.

The ratio of land to water for the whole earth is 1:2 and 2:3 for the northern hemisphere. What is the ratio of land to water in the southern hemisphere?


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a

4:11

b

1:3

c

1:4

d

4:7

answer is A.

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Detailed Solution

Concept- In the earth, https://lh4.googleusercontent.com/x_F48CxvNkoEglcPbZ1lNheFzGVG4MZkxxtiY0Z3SX1p1y98xm9CqgCUpSgAbWuDMRkiY9ZBOzbbBxOb7UVF4JlZvSoWa3qbH1DfqyBKkxowraTT4qGA18tyCHwqoZCh395t9u-txrpk3V0Q3O7ocBk is northern hemisphere and other https://lh4.googleusercontent.com/x_F48CxvNkoEglcPbZ1lNheFzGVG4MZkxxtiY0Z3SX1p1y98xm9CqgCUpSgAbWuDMRkiY9ZBOzbbBxOb7UVF4JlZvSoWa3qbH1DfqyBKkxowraTT4qGA18tyCHwqoZCh395t9u-txrpk3V0Q3O7ocBk is the southern hemisphere.
Let, https://lh3.googleusercontent.com/DMIJCNIIL-Wri9k3-x3hxoCDn3a19vhIPwqWzZsP5LzO4CxeaQ751QNKgR1IWclf3o2QbpK2EQq531QNMjUWMvSJcnrX5GtrJb8E_CaVb8kHa-nU92IbpmDvUUkcD5NdrIPOblxhLovaQfM8XHkqvWc be the ratio of land and water for the earth
And https://lh4.googleusercontent.com/AEe3RMe0LGfozIU-IUSxMfduxbNHUnq37aC-LHRKpboyborXLykIzBhOf0Nq3M4YKkZLicYrNOCuNKc3Uxny3ib48Kz5CHTN_Tmi4dZgd4W5xnKdEhc4Kx1pF1xVTUSz-DvsuQ6GGI7xN-0khjyRr5Q be the ratio of land and water for the northern hemisphere
Therefore, given data will be

 

Land

Water

Total

Earth

https://lh3.googleusercontent.com/DMIJCNIIL-Wri9k3-x3hxoCDn3a19vhIPwqWzZsP5LzO4CxeaQ751QNKgR1IWclf3o2QbpK2EQq531QNMjUWMvSJcnrX5GtrJb8E_CaVb8kHa-nU92IbpmDvUUkcD5NdrIPOblxhLovaQfM8XHkqvWc

https://lh5.googleusercontent.com/NFOxoAYRjCpLhpQSndgIaayiWSg98XmewZdd4yh-vphQhkJmj9d2bVo7d3j-PIClOYtHX8ZnHlhY0PZ5M417e7WPuES4UkaOSiK0neAA6cY33uvl8RCYl2PSCCcEknRPSjKq1K9hZoMeqAYKqTl4g0o

https://lh6.googleusercontent.com/zPYjig_cdEswyq-xUm5XNH4E_q_YHz21TeRWnbRdej9npy-ksNBOx9txy3uJmnPUywNMQcku4rHAbmUiKm_7gBJVa1YwS3X7ySC9ZsCg7RuRlxSTYPnVPy7I1zHqTwjfNdI89eHKJeDTosZo2sJmlcQ

Northern Hemisphere

https://lh3.googleusercontent.com/_6B-qhOPk66CHF19--tCuRFrdFnK-PrY9yrUr1KKFbXaozNWButsZFhMij4NJBwPTFhsxF4HFzjZCSkEnVyhGJsPq8alMOFRX9WUV0vb7A-c1k2DVpvUJu5sVOpX-CcgTPNHmGg-z5FeDzD98S2Cz9k

https://lh4.googleusercontent.com/ZfHtkgtFtd2jVVP3T-GH6fpH5pGwb2NCO8UiHc8p87O9UUu_3XBt-zdZsmUmAI7cD-stSYxjeFzlbmRCHOqKB86nEKICO5qoORiqXRqm0X8TsVzi_c-fKZEFL4jAc6_Alu1Kj8IQDPuJEU4J9ZDMG6Q

https://lh5.googleusercontent.com/TVbgZ3qKbTqpHrN236MeqsapXzemuaZPGoeS5QXTJdBrEfVyku1W894eH0MAxc3ieYr_JlFO-2IxKOW0CNb3aLsgcPJe0m3ja4-BGdl4uLhZcm1-04r4azUJ6WSGoEwTqRWEihce25d1QeGvwuEk-s8

Southern Hemisphere

https://lh3.googleusercontent.com/RZpcGVHiIrENcIH4EC770wj46o1yRP1yhfxJIyRYAA9F1_peTFTFnVs4At4BlwJkwTjKj5Tc2UKwIcKYKCw2nmcZy6gIxMUv1z6lnJRoCvzOnWQOYrotKQoZgGpSE1XXRSEos-s_pMYkhpbI9BYtSvE

https://lh4.googleusercontent.com/g3pR6fOAG_SRyO9l4KbkPLUJef0MS9-0BJTP1vVVSqujdfjjR0jYbEutgihIvix2A0IwDQ8oH5j1yVe76j7UN4TVDR-WePwyq1G5ndpOI6-YBefsSmCcshrs7NvInBIYpb7_jbOuSQj_10kAgPG6b8Q

 

Now, the ratio of the land and water of southern hemisphere is https://lh6.googleusercontent.com/cXz-952oHBP0_j_4sZAdllG-ooNPwwgNDdYTPDuxqrYusotzeX885EAzFzHGyZKr6YqRKMBuStn6GelMmZ77LJ1UO8PiQUVs2t4k0Bv1VDcXD6jhY6aWKsEyK-En78O0-v83FkyWbWmkOlVgrUqVFJ8-------(1)
As we know that, northern hemisphere is the https://lh4.googleusercontent.com/x_F48CxvNkoEglcPbZ1lNheFzGVG4MZkxxtiY0Z3SX1p1y98xm9CqgCUpSgAbWuDMRkiY9ZBOzbbBxOb7UVF4JlZvSoWa3qbH1DfqyBKkxowraTT4qGA18tyCHwqoZCh395t9u-txrpk3V0Q3O7ocBk of the earth.
It implies that,
https://lh4.googleusercontent.com/UbhBOm2Ovnws5oU3pUj3ZmLSua5nVIdU-005kZ0PT5OIEANHFJh_X7y6MOu8EASkOhcbidakcnWvg9jxtVvR__UKfkvexZ-kqGtJNdval6a0TTpfYZY262n19NtC7xE5SOcT3SsOXfzfxJRLPpTE-90https://lh3.googleusercontent.com/CW29rFHU2ZlKAzh4E9zOcG9FAuqz2lsNZKZ8qI7tteY29l5sfU_bq04aK649irhUuUyQovPE1pJPyhtD2qCdbNNdboD_stOTT9IA2PP9bUNwbk8ueV-cMwIZI11UT78ZNRAFqSbP5JZbHCDJLKb4eBAhttps://lh6.googleusercontent.com/WdayRMsNmlhxOu4rUR31TTOax79l7faXPZhWLpj8qstSuGOiSZUQ-NRD_UZPAOem-zP-ePbmfLeQaAiKXezIKB0NQdnxbDNcVo_gWSztCKfWn2vhjE-fWXaIYkivT5a5fqf3x8WJEepbI0vBXgGxLnIhttps://lh4.googleusercontent.com/8pRK23jM5HsvF_7SJRSvPqi-4IdSs_LtnuMAXcF9M5pEYlqHlpigCP-hPNe3_k_qRupnwNYZXuEJE8Or4nGUxhs80-tpO9bgpMc5Feow2XnHawuiBxilliWGNb-piKtTBkjdfiifgIW678rm7nsWRbMEquation (1) will be,
https://lh3.googleusercontent.com/0cS9E3P-jI7mHeDxyyc9sLocX6N2_Oe9Gkzu61G20QCXuR_N9lkVQgo6IJMkWL50xf2mPLzWh8zfSRbcWP7_4vBP8c9zUjQpv06Va5nUdKHARzI2ds1QvZmJctMp_Z8_JYA3VsjthjSm4qUClEGt1xAhttps://lh5.googleusercontent.com/k-H1TRDuPKdjpyWdlNWAp3gXSO7BXsVumiY6Tufb8KJVs6dHCv8KAvDgij3237yPPJgyVVhBTSRJHibMVDmQYiBEDZxN5adizqLnbPoY_5OfA6QWiwLDAqJDfRQRPjv6LbKGVfSL9E78ljK0ydZm2Gshttps://lh4.googleusercontent.com/lM1QHgEdQtGQ1LEMmwI7UKxibJaXQmfJ4KdGmICVD8zKAtp_kV-RJFrY8P0Yq9LaSzu9oaDjkumwzPoWare9NiluHtx_D9kBzdCrma9dam3tZL_RWOvsSqpHO0DwH5bL58hr01YEHABi1wUZF4hzUIMhttps://lh4.googleusercontent.com/Ro4slkf5JiOeedGwBGElaOWkMLF5r3TTusu_QKQLvUUNECE5zAzJwE43oZamfZjyzeR1oVJo4pB5zK6tSpypytbMISN6CKrPWDLI_EqgqTZ8jCWuMGpsZpOMzyZ8BWvlvC3lsvPfKtSjTTFolWkDPGohttps://lh5.googleusercontent.com/OuiXP4tZ52TG2pUUwJ0YJHmjcQECfn14Pq4CUgZuahjHd19elloAAPEuSctS1PwaA76tv7SQOBJviCClNz_78HZlpgNgb7OOuLyZ-Xbazmk8p1jdxDge5WsylszyA4v8vzZi4Yw2Oh-KEFI3OWCuxaMThe southern hemisphere has a land-to-water ratio of- https://lh3.googleusercontent.com/fAZFqOdcUJG0vQjV9TSVB38Hq-2kzKvPdtDHOOmw1TB4Av7KugiJqVIZkl0JrclMW7e76KZkw--Uf7sPM7wBE5I9FvkGLUTaQUOwhQbxbSqnzM46uIefyFI66R7pnw25FSv9b4fCG1K7YYe4sTJdgi8.
Hence, the correct answer is option 1) 4 : 11
 
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