Math question. Simultaneous equations?
Hello, I've tried this, but … A) A ticket to a miniature train display costs $ 3.00 for adults and $ 1 for children. If tickets are sold for 96 days total collection of $ 160, how adults and chuldren attended? B) Two didj is 7 times the sum of the numbers. If the numbers are reversed, the new number is less than 18 the initial number. Please find the number to show the work of both to choose the best answer
(A) 3A + A + C = 160 C = 96 ==> C = 96-3A A + 96 – 160 A = 2A = 64 A = 32 C = 96-32 = 64 test: 3 * 32 + 64 = 160 96 + 64 = 160 ok (B) (1) 10x + y = 7 (x + y) = 7x + 7y # 7 times subtract, subtract 6y y = 3x x = 2 (2) x = 10x + 10y + y – 18 # subtract subtract x = -18 9y 9y 9x Connect 2y for x = 9 (2) -18 = 18y 9y – 18 18 # add, subtract 9y 9y = 18 y = 2 x = 2y = 4, the number is 42
Charles Ro train model train display
