If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter

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Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Tue Jan 19, 2021 9:36 am

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If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter of this substance? (1 cubic meter = 1,000,000 cubic centimeters; 1 kilogram = 1,000 grams)

(A) 0.0073
(B) 0.73
(C) 7.3
(D) 7,300
(E) 7,300,000

Answer: D

Source: Official Guide

Source: Beat The GMAT — Problem Solving | Tue Jan 19, 2021 9:36 am

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Re: If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic me

by Scott@TargetTestPrep » Sun Jan 24, 2021 5:40 am

Vincen wrote: ↑
Tue Jan 19, 2021 9:36 am
If the mass of 1 cubic centimeter of a certain substance is 7.3 grams, what is the mass, in kilograms, of 1 cubic meter of this substance? (1 cubic meter = 1,000,000 cubic centimeters; 1 kilogram = 1,000 grams)

(A) 0.0073
(B) 0.73
(C) 7.3
(D) 7,300
(E) 7,300,000

Answer: D

Source: Official Guide

Solution:

Since 1 cubic meter = 1,000,000 cubic centimeters and 1 cubic center of the substance weighs 7.3 grams, then 1 cubic meter of the substance weighs 1,000,000 x 7.3 = 7,300,000 grams. Since 1 kilogram = 1,000 grams, then 7,300,000 grams = 7,300,000/1,000 = 7,300 kilograms.

Answer: D

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