Question

Calcule:

a) 15% De 300

b) 31% De 2 500

c) 80% De 1 200

d) 43% De 7 200

Answer 1

a)15*300=4.500
4.500/100=45

b)31*2.500=77500
77500/100=775

c)80*1200=96000
96000/100=960

d)43*7200=309600
309600/100=3096

Answer 2

a)100 300
15 x

100x=300.15
100x=4500
x=4500/100
x=45

b) 100 2500
31 x

100x= 2500.31
x=25.31
x=775

c) 100 1200
80 x

100x = 1200.80
x=120.8
x=960

d) 100 7200
43 x

100x=7200.43
x=72.43
x=3090