KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Percentage Problems - Explained

The video tutorial explains how Jack spends 35% of his £400 on a new bike. It breaks down the calculation by first finding 10% of £400, then using this to find 35% by adding three 10% parts and a 5% part. The tutorial concludes with the final calculation of £140 spent on the bike, emphasizing the straightforward nature of percentage calculations.

Jack has a certain amount of money and spends a percentage of it on a bike. What is the total amount he has?

• £200

• £300

• £400

• £500

What is the first step in calculating 35% of Jack's money?

• Find 5% of the total

• Find 10% of the total

• Find 20% of the total

• Find 50% of the total

How is 35% of Jack's money calculated using 10%?

• By adding two 10% parts and one 5% part

• By adding three 10% parts and one 5% part

• By adding four 10% parts

• By adding five 10% parts

What is the value of 5% of Jack's total money?

• £20

• £15

• £10

• £25

What is the total amount Jack spends on the bike?

• £150

• £130

• £120

• £140