Question

1)1h 25 min+43 min20s - 1h 10 min 13 s=.......................s
2) {[(1044:29 - 8)x4-(32-644:23)x16]:4-1}x5+5=?

Answer 1

1h 25 min=60×60=3600 s 25 min=60×25=1500 s 3600 s+1500s=5100 s 43 min 20s=43×60=2580 s+20s=2600s 1 h 10 min 13s =60×60=3600 s 10 min=10×60=600 s+3600+13s =4213s 5100s+2600s-4213s=7700-4213=3487 s 2){[(36-8)x4-(32-28)x16]:4-1}x5+5 {[28x4-4x16]:4-1}x5+5 {[112-64]:4-1}x5+5 {48:4-1}x5+5 {12-1}x5+5 11x5+5 55+5 60