Task: Question Answering
Input (English): Problem: 90 kg of an alloy a is mixed with 140 kg of alloy b. if alloy a has lead and tin in the ratio 3: 4 and alloy b has tin and copper in the ratio 2: 5, then the amount of tin in the new alloy is ?
Options: a. 100.6 kg, b. 95.4 kg, c. 117.5 kg, d. 91.4 kg, e. 92 kg
Output (English): d