IGCSE Mathematics Paper-1: Specimen Questions with Answers 161 - 163 of 175

Question number: 161

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Essay Question▾

Describe in Detail

There is a sale of 60 % discount on a shop of clothes. Vicky bought shirts of in this sale.

(a) How much did Vicky paid?

(b) The next day, all items were sold at 70 % of the original price. How much more would Vicky have saved if he had waited until the next day to buy the shirts?

Explanation

Here,

(a) Price of shirts is and sale is of 60 %.

So, he saved.

So, he paid .

(b) Next day, all items were sold at 70 % of the original price.

So, , so he will saved more than saved in 60 % discount.

Question number: 162

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Short Answer Question▾

Write in Short

Solve the simultaneous equations

Explanation

Here,

Simultaneous equations are those who have the unique solutions.

Equations are

Now, add equation (II) into (I),

Now, put into

So,

Thus,

Question number: 163

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Short Answer Question▾

Write in Short

In the right-angled triangle ABC, AC = 10 meters and angle . Calculate the length of BC.

A right angled triangle has an angle and length of diagonal

A Right Angled Triangle Has an Angle and Length of Diagonal

Find the length of a side BC of triangle ABC by using given values

Explanation

Here, triangle ABC is right angled triangle,

Angle and AC = 10 m is given,

So,