maths question

A. if (2a+b):(3a+4b)=4:11, find a:b. (a) 1:1, b) 1:2 c) 2:3 d)3:4

B. Peter is makinga model of the vtc tower. He uses a scale of 4cm to 10m. If the actual height of the VTC tower is 62.5m, find the height of the model. a. 25 cm b. 50cm c.62.5 d. 156 cm