Question
Four boys and nine girls can
complete a task in 24 days. Three boys and five girls can finish the same task in 36 days. How many days will it take for six boys and six girls to complete the same task?Solution
ATQ, Let no of boys be 'b' and no of girls be 'g' (4b+9g)24 = (3b+5g)36 (4b+9g)2 = (3b+5g)3 8b+18g = 9b+15g b = 3g 21g × 24 = 24g × number of days taken Number of days taken = 21 days
Which of the following is a program that uses a variety of different approaches to identify and eliminate spam?
Which of the following file format is not a video file format?
What is used to temporarily rename a column name without affecting the database?
A network of wires that links various hardware components in a computer is called _______________. Â
A software firewall can help protect your computer but at the same time can cause issues with your ..........................
Who primarily uses user-friendly software tools to manage personal databases?
Which of the following is not a cloud storage service device?
Which recently launched platform aims to empower marginalized artisans with global exposure and e-marketing?
Select the true statement about an operating system (OS)?
What is the primary function of Recycle Bin?
