CIE Mathematics Paper-1: Specimen Questions 142 - 144 of 175

Question number: 142

Essay Question▾

Describe in Detail

Nisha bought a showpiece in this sale. Its original price was $20 .

Tag of a sale in a shop

Tag of a sale in a shop

Find the below calculation about sale

(a) How much did Nisha save?

(b) The next day, all items were sold at half the original price. How much more would Nisha have saved if she had waited until the next day to buy the showpiece?

Explanation

Here,

(a) Price of showpiece is $20 and sale is of 30 %.

So, 20×30100=6$

So, she got discount of 6$ which she saved.

(b) Next day, all items were sold at half the original price that means 50 % reduction.

So, 20×50100=10$ , so she will saved 106=4$ more than saved in 30 % reduction.

Question number: 143

Short Answer Question▾

Write in Short

Expand the brackets and simplify 9a34a(2b5a)

Explanation

Here,

9a34a(2b5a)

9a38ab+20a2

9a3+20a28ab

Question number: 144

Short Answer Question▾

Write in Short

A Sari is having the length of 550 centimeters. If we cut it into equal length of 38184 centimeters, then how many piece we will get.

Explanation

Here, Sari is of 550 centimeters.

We cut it into 38184 centimeters of equal length means 1704=42.5centimeters.

So, 550 centimeters = 1 sari’s piece

Then 42.5 centimeters =? pieces

55042.5=12.94pieces~13pieces.

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