Dozer61 Dozer61

15-12-2014
Mathematics

Answered

A class sorted 45 books in 90 minutes. How long would it take to sort 120 books?

Answer :

15-12-2014

[tex]45 \ books\ in\ 90\ minutes\\\\ 120\ bookes\ in\ x\ minutes\\\\ making\ proportion\\ 45-90\\120-x\\\\cross\ multiplication\\\\ 45x=90*120\\\\ 45x=10800\ \ \ | divide\ by\ 45\\\\x=240\\\\ It\ will\ take\ 240\ minutes.[/tex]

Answer Link

Elorox101 Elorox101

15-12-2014

45 * 2 2/3 = 120
90 * 2 2/3 =240
It would take 240 minutes to sort 120 books

Answer Link

Other Questions

What is the molar mass of CHCl₃?A. 48.47 g/mol B. 83.92 g/mol C. 119.37 g/mol D. 121.39 g/mol

The compromise that brought an end to the nullification crisis:A. Slowly removed federal troops from South CarolinaB. Gradually lowered the tariffC. Congression

True or False: At equilibrium, reactions stop happening.A. TrueB. False

[tex]R[/tex], [tex]S[/tex], and [tex]T[/tex] are integers. If [tex]R + S[/tex] and [tex]-S[/tex] are both odd numbers, which of the following must be an even nu

Use the chemical equations tool to complete and balance the following reaction between hydrochloric acid and sodium hydrogen carbonate:H()+H₃()→

Simplify the expression:[tex]\[ 6 \sqrt[3]{375} - 2 \sqrt[3]{192} \][/tex]

Which of these is NOT a benefit from using windbreaks next to your farm

Please mark the correct statements. (2)A. The Berlin Wall was built to keep West Germans out of the GDR.B. As time passed, relationships between East Germans an

Singly charged positive ions are kept on a circular orbit in a cyclotron. The magnetic field inside the cyclotron is 0.936T. The mass of the ions is 2.84 × 10⁻²

Sandy noticed that no one in her marketing team was taking charge of the project, so she called for a meeting. At this meeting, she discussed what needed to be

Question 7 Drugs of addiction act upon a portion of the brain called the limbic system. True Question 8 Prescription drugs can impair your ability to drive safe

How was production different after the Industrial Revolution than it was before?A. Before the Industrial Revolution, items were produced by factory owners. Afte

Sorghum has 4 photosynthesis, is more drought tolerant than maize, does not fix nitrogen, and is self-pollinated.a. Trueb. False

Paraphrase this "Processor speed, or clock speed, is measured in hertz (Hz) and represents the number of instructions a processor can execute per second. Here a

example of a thesis about high school communitiy service

Part A: Rewrite the statements below using one expression from each box. Follow the example.Example: Human colonies on the moon by 2060. In my opinion, there

At MGT, Inc., Sam has a proposal for which he needs the favorable opinion of the Board of Directors. He knows that the phrasing he chooses to use and how he pre

Select the correct row in the table.Which row reveals the [tex]$x$[/tex]-intercept of function [tex]$f$[/tex]?[tex]\[ \begin{tabular}{|c|c|} \hline $x$ & $

Dooooo rdldodo rororro

In this excerpt, the author shows how terrible conditions can cause people to be unsympathetic to the pain of others. How does the memoir genre enable the autho