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# Basic Math/Maths

Question
Hi sir pls help
Mrs jacob bought 3 different coloured shawls for her friends- red, black and grey. There were 3 times as many black as red and grey shawls. There were twice as many red shawls as grey shawls.. Given that there were 10 more red shawls than grey shawls, how many more black shawls than red shawls did Mrs Jacob buy?

Hello, Angel.

This problem can be solved if we write various equations.

First, let's establish some variables.

Let x = number of grey shawls

2x = red shawls

x+10=2x

Therefore, the number of grey shawls is 10, the number of red shawls is 20, and the number of black shawls is 90 (3(20+10)).

The question asks how many more black shawls than red shawls Mrs. Jacob buys. The answer is 70. 90-20=70.

I hope this helps. If you need clarification on anything, please ask.

Regards,
John

Basic Math

Volunteer

#### John Zalewski

##### Expertise

I can help you solve problems involving fractions, decimals, ratios, and algebra. I can teach you how to do math faster, and even in your head. I can teach math definitions, and help you study, if necessary. Please do not ask any graphing, trigonometry, or calculus questions. Try to work through homework questions before asking for assistance.

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I routinely process numbers of all kinds in my head, without need of a calculator.

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I was an A math student while in high school.