Blissedsher\" post_id=\"2040114\" time=\"1633076051\" user_id=\"23814:May I know why minus 30c[/quote]The difference between 50 cts n 20 cts.Part (a):lefrancaisestcool\" post_id=\"2040110\" time=\"1633074536\" user_id=\"180808:[quote=wch post_id=2040103 time=1633073465 user_id=6988]May I know the steps?
Given that they both have the same number of coins, and Ivan has 40 more 20 cent coins than Helen, this means that both Helen has 40 more 50 cent coins than Helen, also meaning that she has more money.
Helen has 40(50C-30C)=$12 more than Ivan
Part (b)
Since Helen had 40 more 50 cent coins than Ivan, therefore her coins are (40x2.7g)=108g heavier than Ivan's coins. Then, simply subtract 108g from 1134g, which equals to 1026g or 1.026kg
Alternatively the solution is (40×50) +(64×20) - (104×20) cts = 1200 cts = $12