Let x be the number of erasers
4 = 20
1 = x
4x = 20
x = 5
therefore there are 5 number of erasers
Add: 2/9 + 3/5 = 2 · 5/9 · 5 + 3 · 9/5 ·9 = 10/45 + 27/45 = 10 + 27/45 = 37/45
Thats 95 cents becuase nickel equals 5 and dime equals 10
so 5x5=25
and 7x10=70
so 70+25=95 cuz 0+5=5 and 7+2=9
295 she spent
y dollars she can spend on other expanses
then 295+x+y=500
implies x+y=205
