THREE YEARS AGO, MOTHERS AGE IS EIGHT TIMES AS OLD AS SONS AGE....

Câu 6/ Three years ago, mothers age is eight times as old as sons age. Mother is thirty five years old now. How old is son now? a/ 4 ; b/ 5 ; c/ 6 ; d/ 3

ĐỀ THI TOÁN TIẾNG ANH VIOLYMPIC 2015 – 2016

LỚP 3 – VÒNG 7 (21-12-2015)

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