Textbooks are stored on 2 shelves. Each shelf is 0.72m long and each textbook is 30mm wide. Can 50 textbooks be stored on these 2 shelves?

First off, we better convert the 30mm into m. Now, we know that in 1cm there are 10mm. So in 2cm, there are going to 20mm and in 3cm there are going to be 30mm. So each textbook is really 3cm thick. Now, hopefully you know that 1cm is 1/100 (one "one-hundredth") of a metre. We've got 3cms, so we're going to have 3/100 (three "one-hundredths") of a metre. As a decimal, this is 0.03m.

Next, we better calculate our total shelf space, which is 2 x 0.72m = 1.44m. We want to work out how many textbooks (of width 0.03m) we can squeeze into our 1.44m of shelf space. So we're going to divide 1.44 by 0.03, to work out how many "lots of" 0.03 we can squeeze into 1.44. 1.44/0.03 gives us 48. So we can fit 48 textbooks onto the two shelves.

Hence we can't fit 50 textbooks onto the two shelves!

Answered by Jack D. Maths tutor

7788 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

How do I do work out the area of a rectangle?


If 3x =15 and x+y =7 what is (3y)^2?


Find the slope of the line perpendicular to the line y = (1/5)x - 2


How do I add decimal numbers?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences