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(a) A sweater costs $ ( 60 + 25 ) = $85 more than a cap.

(b) If a pair of pants cost $ u, then sweater costs $ 3u and a cap costs $ ( 3u – 85)

So

3u + + u + 2( 3u – 85)  = 170

4u + 6u – 170 = 170

10u = 340

u =34

170 + 25 + ( 3*34 – 85)  = 212

So Brian had $212 at first.

Check : 170 + 3 * 34 – 212 = 60 checked.

 

 

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