please answer for 1,3,5
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Q 1.
Let the no. be x
4x/5=3x/4+4
4x/5=(3x+16)/4
16x/5=3x+16
16x=15x+80
x=80
Q 3.
Let the no. be x
2x=45+x/2
2x=(90+x)/2
4x=90+x
3x=90
x=30
Q 5.
Let the no. be x
x/5+5=x/4-5
(x+25)/5=(x-20)/4
4x+100=5x-100
200=x
Let the no. be x
4x/5=3x/4+4
4x/5=(3x+16)/4
16x/5=3x+16
16x=15x+80
x=80
Q 3.
Let the no. be x
2x=45+x/2
2x=(90+x)/2
4x=90+x
3x=90
x=30
Q 5.
Let the no. be x
x/5+5=x/4-5
(x+25)/5=(x-20)/4
4x+100=5x-100
200=x
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