1] Two numbers are in the ratio of 15: 11.If their HCF is 13,find the number
a]190,140  b]191,141  c]192,143  d]195,143

let the required numbers be 15x and 11x
Then HCF is x
So x= 13
The numbers are 15*13 = 195 and 11*13 = 143

2] Two whole numbers are in the ratio of 15: 11.If their HCF is 7,find the number
a]100,77  b]105,141  c]105,77  d]195,143