17 Views

Question : The total number of colour blocks is 1260. If the ratio of red block to blue block is 2 : 5 and the ratio of blue block to yellow block is 15 : 7, then how many yellow blocks are there?

Option 1: 315

Option 2: 675

Option 3: 270

Option 4: 745


Team Careers360 3rd Jan, 2024
Answer (1)
Team Careers360 13th Jan, 2024

Correct Answer: 315


Solution : The ratio of red block to blue block = 2 : 5 = 6 : 15
The ratio of blue block to yellow block = 15 : 7
$\therefore$ The ratio of red block to blue block to yellow block = 6 : 15 : 7
Let $6x,15x,$ and $7x$ be the numbers of red, blue and yellow blocks, respectively.
Total number of colour blocks = 1260
$⇒ 6x+ 15x+ 7x = 1260$
$⇒ 28x = 1260$
$\therefore x=\frac{1260}{28}= 45$
So, the number of yellow blocks = 45 × 7 = 315
Hence, the correct answer is 315.

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books