Question

It’s number 12 and i need help with it

Answer 1

Train A weighs 241 tons

train B weighs 71 tons.

Explanation:

312-170=142

142÷2=71

170+71=241

241+71=312

Answer 2

Train A weighs 241 tons while train B weighs 71 tons.Let x represent the weight of train A and y represent the weight of train B.Since they both weigh 312 tons, hence:x + y = 312 (1)The difference of their weight is 170, and train A is heavier, hence:x - y = 170 (2)Solving equation 1 and 2 simultaneously gives:x = 241, y = 71 Therefore train A weighs 241 tons while train B weighs 71 tons.

Explanation: