Pierre inherited 137 200 from his uncle and decided to invest the money He put part of the money in a money market ac that earns 6 3 simple interest The remaining money was invested in a stock that returned 6 in the first year and a mu fund that lost 3 in the first year He invested 10 000 more in the stock than in the mutual fund and his net gain for 1 y 2640 Determine the amount invested in each account Step 1 of 10 Label the variables With three unknowns we need three independent equations Let x represent the amount put in the money market account Let y represent the amount invested in the stock Let z represent the amount invested in the mutual fund The total amount invested was 137 200