Anumber is two fifth times another number. If their sum is 70. Find the number.
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Answer is 68
let the no. be x
2/5 of x + x = 70
2/5x+x=70 LCM = 5
5x + 2/5(whole upon)= 70
5x+ 2 = 70 * 5/5 (whole upon)
5x=68
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