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*Challenge yourself with the question before look out for the given solution‼!*

**Upper primary school mathematics question UPQ263**

Hairu had 250 stickers more than Sarin at first. After Hairu gave Sarin 180 stickers; Sarin had twice as many stickers as Hairu. How many stickers did Sarin have at first?

Solution:

Sarin’s stickers was 2 times more than Hairu finally after received 180 stickers from Hairu

Draw the model

From the model

1 unit = 180 – 70 = 110 stickers

The number of stickers Sarin have at first = 110 – 70 = 40

Alternative solution:

By equations,

Hairu given 180 stickers to Sarin and Sarin had 2 times more sticker than Hairu

Set : Number of stickers Sarin had at first as S

Number of stickers Hairu had at first as H

We have,

2 × (H – 180) = S + 180

2H – 360 = S + 180

2H = S + 540

H = S + 250

2H = 2S + 2 × 250 = 2S + 500

S + 540 = 2S + 500

S = 540 – 500 = 40

The number of stickers Sarin have at first is 40