bantuin dong saya besok saya unbk tapi lupa caranya ngerjain ini , bantuin pake cara ya

3) 3/10+1/4+3/8 = 24+20+30/80 = 74/80

74/80 × 40 = 37

40- 37 = 3 orang

3. sepak bola = 3/10 × 40 = 12
volley = 1/4 × 40 = 10
basket = 3/8 × 40 = 15
berenang = 40 - (12+10+15) = 40 - 37 = 3 (b.)